Class number problem for imaginary quadratic fields

Class, CLASS, Economy class, Social class, C-class cruiser, Lerici-class minehunter, Class discrimination, Middle class, Working class, Class (computer programming), American middle class, Upper class, Fiji-class cruiser, Class consciousness, Polar Class, Gleaves-class destroyer, Class action, DR Class 130 family, Upper middle class, Hamilton-class cutter, Ship class, N class, Lekiu-class frigate, Class F, Seawolf-class submarine, Airspace class, Halifax-class frigate, Railroad classes, Kidd-class destroyer, British U-class submarine, Destiny-class cruise ship, Social class in the United States, Auk-class minesweeper, Condottieri-class cruiser, Visakhapatnam-class destroyer, American Flower-class corvette, Marxian class theory, Kuma-class cruiser, A class, Province class, Skipjack-class submarine

Calypso class, Ohio-class submarine, Virginia-class submarine, Lower middle class, Astute-class submarine, Borei-class submarine, MHC class II, Accentor-class minesweeper, Shchuka-class submarine, Class conflict, Adjutant-class minesweeper, Moudge-class frigate, Business class, Character class, Hébé-class frigate, Plunger-class submarine, Ruling class, Brahmaputra-class frigate, Tripartite-class minehunter, T class, Lupo-class frigate, S-class ferry, V class, City class, Gearing-class destroyer, Brooklyn-class cruiser, Charles F. Adams-class destroyer, Noun class, U class, Class stratification, Complexity class, Gato-class submarine, Class analysis, Lower class, Grand-class cruise ship, Trafalgar-class submarine, J class, Wickes-class destroyer, Agosta-class submarine, R class, Paulding-class destroyer, Barbel-class submarine, MGWR Class L, X class, M class, Brooke-class frigate, Working class in the United States, Inner class, Valour-class frigate, Permit-class submarine

Class, CLASS, Economy class, Social class, C-class cruiser, Lerici-class minehunter, Class discrimination, Middle class, Working class, Class (computer programming), American middle class, Upper class, Fiji-class cruiser, Class consciousness, Polar Class, Gleaves-class destroyer, Class action, DR Class 130 family, Upper middle class, Hamilton-class cutter, Ship class, N class, Lekiu-class frigate, Class F, Seawolf-class submarine, Airspace class, Halifax-class frigate, Railroad classes, Kidd-class destroyer, British U-class submarine, Destiny-class cruise ship, Social class in the United States, Auk-class minesweeper, Condottieri-class cruiser, Visakhapatnam-class destroyer, American Flower-class corvette, Marxian class theory, Kuma-class cruiser, A class, Province class, Skipjack-class submarine, Calypso class, Ohio-class submarine, Virginia-class submarine, Lower middle class, Astute-class submarine, Borei-class submarine, MHC class II, Accentor-class minesweeper, Shchuka-class submarine, Class conflict, Adjutant-class minesweeper, Moudge-class frigate, Business class, Character class, Hébé-class frigate, Plunger-class submarine, Ruling class, Brahmaputra-class frigate, Tripartite-class minehunter, T class, Lupo-class frigate, S-class ferry, V class, City class, Gearing-class destroyer, Brooklyn-class cruiser, Charles F. Adams-class destroyer, Noun class, U class, Class stratification, Complexity class, Gato-class submarine, Class analysis, Lower class, Grand-class cruise ship, Trafalgar-class submarine, J class, Wickes-class destroyer, Agosta-class submarine, R class, Paulding-class destroyer, Barbel-class submarine, MGWR Class L, X class, M class, Brooke-class frigate, Working class in the United States, Inner class, Valour-class frigate, Permit-class submarine, Daphné-class submarine, Benjamin Franklin-class submarine, Kasturi-class corvette, Apollo-class cruiser, NBR N class, Alvand-class frigate, Gawron-class corvette, Knox-class frigate, P class, Social class in the United Kingdom, Travel class, K class, Aditya-class auxiliary ship, County-class cruiser, Mexican-American middle class, Elementary class, Heroine-class submarine, Echo-class submarine, Town class, Tambor-class submarine, NBR K Class, Yasen-class submarine, Östergötland-class destroyer, GWR 4100 Class, Natick-class tugboat, Romeo-class submarine, G class, Inhaúma-class corvette, Sōryū-class submarine, O class, Second class, Class B share, No.13-class submarine chaser, Yūshio-class submarine, Castle class, Pierre Radisson-class icebreaker, Godavari-class frigate, Professional–managerial class, Class of Heroes, First class travel, L class, Bogue-class escort carrier, La Fayette-class frigate, Tarawa-class amphibious assault ship, Nelson class, A-class submarine (1903), Town-class cruiser (1910), H class, W and Z-class destroyer, C++ classes, British Rail Class 317, Abhay-class corvette, Atlanta-class cruiser, MHC class I, International A-class catamaran, Alaska-class cruiser, O and P-class destroyer, İstif-class frigate, Baltimore-class cruiser, Omaha-class cruiser