A081363 -id:A081363 - cp's OEIS frontend

A081364 Smallest d such that real quadratic field with discriminant d has class number n.

5, 40, 229, 145, 401, 697, 577, 904, 1129, 3129, 1297, 2920, 8101, 6097, 11321, 2305, 11257, 7465, 15409, 3601, 7057, 19048, 23593, 15529, 27689, 13321, 8761, 21505, 49281, 11665, 97753, 29665, 61889, 44065, 25601, 35113, 24337, 54569

Offset: 1

Dean Hickerson, Mar 19 2003

nonn

Victor Y. Wang, On Hilbert 2-class fields and 2-towers of imaginary quadratic number fields, arXiv preprint arXiv:1508.06552, 2015
Eric Weisstein's World of Mathematics, Class Number

Cf. A081363.

a(31) to a(38) from Eric W. Weisstein, May 19 2004

A279908 Least positive squarefree integer k such that Q(sqrt(k)) has a class number greater than that of any previous integer.

Original entry on oeis.org

2, 10, 79, 82, 401, 577, 1129, 1297, 4759, 9871, 15409, 23593, 24859, 49281, 97753, 106537, 159199, 197137, 212137, 239119, 245023, 444089, 589822, 614849, 815413, 837929, 943951, 1025494, 1389169, 1564999, 3145801, 3335737, 3651919, 3747379, 4494401

Offset: 1

Robert G. Wilson v, Apr 11 2017

nonn

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A081364 Smallest d such that real quadratic field with discriminant d has class number n.

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A279908 Least positive squarefree integer k such that Q(sqrt(k)) has a class number greater than that of any previous integer.

Views

Author

Keywords

Crossrefs