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 A079244 #6 Jul 10 2011 18:22:18 %S A079244 0,6,63,1140 %N A079244 Number of associative commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n. %C A079244 A079230(n)+A079232(n)+A079234(n)+A079236(n)+A079195(n)+A079240(n)+A079242(n)+A079244(n)+A063524(n)=A002489(n) %C A079244 Each a(n) is equal to the sum of the products of each element in row n of A079209 and the corresponding element of A079210. %H A079244 <a href="/index/Se#semigroups">Index entries for sequences related to semigroups</a> %Y A079244 Cf. A079209, A079245, A079230, A079232, A079234, A079236, A079195, A079240, A079242, A063524. %K A079244 nonn %O A079244 1,2 %A A079244 Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003