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 A079196 #11 Jan 26 2022 23:09:11 %S A079196 0,0,1,117,43910,254429575,30468670168769,91267244789189717968, %T A079196 8048575431238519331999349995,24051927835861852500932966021639447717, %U A079196 2755731922430783367615449408031031255128360423993 %N A079196 Number of isomorphism classes of non-associative commutative closed binary operations on a set of order n. %H A079196 C. van den Bosch, <a href="https://web.archive.org/web/20071014230143/http://cosmos.ucc.ie/~cjvdb1/html/binops.shtml">Closed binary operations on small sets</a> %H A079196 <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a> %F A079196 A079193(n) + a(n) + A079199(n) + A001426(n) = A001329(n). %F A079196 a(n) = A001425(n) - A001426(n). - _Andrew Howroyd_, Jan 26 2022 %Y A079196 Row sums of A079197. %Y A079196 Cf. A001329, A001425, A001426, A079193, A079195 (labeled case), A079199. %K A079196 nonn %O A079196 0,4 %A A079196 Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003 %E A079196 a(0)=0 prepended and a(5)-a(10) added by _Andrew Howroyd_, Jan 26 2022