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 A038036 #11 Oct 27 2019 14:26:39 %S A038036 1,2,2,10,2,4,2,46,10,4,2,20,2,4,4,316,2,20,2,20,4,4,2,92,10,4,53,20, %T A038036 2,8,2 %N A038036 Number of nonisomorphic and nonantiisomorphic rings with n elements. %C A038036 Number of rings of order n, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the * operator). - _Jianing Song_, Oct 26 2019 %F A038036 a(n) = (A027623(n)+A037290(n))/2. - _Jianing Song_, Oct 26 2019 %Y A038036 Cf. A027623, A037290. %K A038036 nonn,hard,more %O A038036 1,2 %A A038036 _Christian G. Bower_, Jun 15 1998 %E A038036 a(16)-a(31) added by _Jianing Song_, Oct 26 2019