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 A006802 #11 Jul 08 2025 00:50:15 %S A006802 1,0,0,0,1,-4,12,-30,70,-282,2195,-17680,122815,-752054,4449773, %T A006802 -30013564,259850583,-2638753310,27217133989,-269838173334, %U A006802 2620588539506,-26487374528378,295615679025264,-3658718423476721 %N A006802 Log of e.g.f. for trees A000055(n-1). %H A006802 <a href="/index/Tra#trees">Index entries for sequences related to trees</a> %Y A006802 Cf. A000055. %K A006802 sign %O A006802 1,6 %A A006802 _N. J. A. Sloane_