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

1,1

Links

Table of n, a(n) for n=1..38.

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

Crossrefs

Cf. A081363.

Sequence in context: A271084 A271092 A273653 * A261739 A230744 A269822

Adjacent sequences: A081361 A081362 A081363 * A081365 A081366 A081367

Keyword

nonn

Author

Dean Hickerson, Mar 19 2003

Extensions

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

Status

approved