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 A079245 #6 Jul 10 2011 18:22:18 %S A079245 0,3,12,58 %N A079245 Number of isomorphism classes of associative commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n. %C A079245 A079231(n)+A079233(n)+A079235(n)+A079237(n)+A079196(n)+A079241(n)+A079243(n)+A079245(n)+A063524(n)=A002489(n) %C A079245 Each a(n) is equal to the sum of the elements in row n of A079209. %H A079245 <a href="/index/Se#semigroups">Index entries for sequences related to semigroups</a> %Y A079245 Cf. A079209, A079244, A079231, A079233, A079235, A079237, A079196, A079241, A079243, A063524. %K A079245 nonn %O A079245 1,2 %A A079245 Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003