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 A002792 M4897 N2099 #22 Oct 20 2023 21:13:50 %S A002792 1,0,1,1,13,51,601,4806,39173,775351 %N A002792 Erroneous version of A108919. %C A002792 Callan points out that this is an incorrect version of A108919. - _Joerg Arndt_, Jul 01 2014 %D A002792 John Riordan, personal communication. %D A002792 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A002792 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A002792 David Callan, <a href="http://arxiv.org/abs/1406.7784">A sign-reversing involution to count labeled lone-child-avoiding trees</a>, arXiv:1406.7784 [math.CO], (30-June-2014) %K A002792 dead %O A002792 0,5 %A A002792 _N. J. A. Sloane_