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 A079240 #6 Jan 27 2022 15:42:04
%S A079240 0,0,0,48,2344,153000,15875924,7676692856,148188196673360
%N A079240 Number of associative non-commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n.
%F A079240 A079230(n) + A079232(n) + A079234(n) + A079236(n) + A079195(n) + a(n) + A079242(n) + A079244(n) + A063524(n) = A002489(n).
%F A079240 a(n) = Sum_{k>=1} A079207(n,k)*A079210(n,k).
%F A079240 a(n) = A023814(n) - A023815(n) - A079242(n). - _Andrew Howroyd_, Jan 27 2022
%Y A079240 Cf. A079207, A079241 (isomorphism classes), A079230, A079232, A079234, A079236, A079195, A079242, A079244, A063524.
%K A079240 nonn
%O A079240 0,4
%A A079240 Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003
%E A079240 a(0)=0 prepended and a(5)-a(8) added by _Andrew Howroyd_, Jan 27 2022