This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A183054 #54 May 06 2021 08:10:16
%S A183054 3,5,7,8,10,10,11,13,14,15,13,14,19,18,19,17,16,21,20,25,21,18,26,3,
%T A183054 25,22,23,30,24,31,21,22,32,30,33,21,29,31,28,36,27,30,35,36,34,23,3,
%U A183054 41,5,38,35,26,40,36,45,34,25,44,34,39,32,37,49,38,51,33
%N A183054 h(-24*n+1) where h(d) is the class number of the quadratic field with discriminant d.
%C A183054 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
%t A183054 Table[NumberFieldClassNumber[Sqrt[-24*n + 1]], {n, 100}] (* _T. D. Noe_, Jul 15 2011 *)
%Y A183054 Cf. A188569.
%K A183054 nonn
%O A183054 1,1
%A A183054 _Omar E. Pol_, Jul 14 2011
%E A183054 More terms and new definition suggested by _David Scambler_, Jul 15 2011
%E A183054 Extended by _T. D. Noe_, Jul 15 2011
%E A183054 Edited by _Omar E. Pol_, Feb 26 2013