A183054 h(-24*n+1) where h(d) is the class number of the quadratic field with discriminant d.

3, 5, 7, 8, 10, 10, 11, 13, 14, 15, 13, 14, 19, 18, 19, 17, 16, 21, 20, 25, 21, 18, 26, 3, 25, 22, 23, 30, 24, 31, 21, 22, 32, 30, 33, 21, 29, 31, 28, 36, 27, 30, 35, 36, 34, 23, 3, 41, 5, 38, 35, 26, 40, 36, 45, 34, 25, 44, 34, 39, 32, 37, 49, 38, 51, 33

Offset: 1

Author

Omar E. Pol, Jul 14 2011

Keywords

• nonn

Comments

First differs from A188569 at a(24). It appears that this coincides with A188569 in a large number of terms. - Omar E. Pol, Feb 20 2013

Crossrefs

Cf. A188569.

Programs

Mathematica

Table[NumberFieldClassNumber[Sqrt[-24*n + 1]], {n, 100}] (* T. D. Noe, Jul 15 2011 *)

Extensions

More terms and new definition suggested by David Scambler, Jul 15 2011

Extended by T. D. Noe, Jul 15 2011

Edited by Omar E. Pol, Feb 26 2013