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 A071310 #14 Jul 11 2024 22:23:30 %S A071310 1,32,4608,7077888,101921587200,19725496300339200, %T A071310 49628717475771816345600 %N A071310 a(n) = (1/4) * (number of n X n 0..11 matrices with MM' mod 12 = I). %F A071310 a(n) = A071302(n) * A071303(n). - _Max Alekseyev_, Nov 06 2022 %Y A071310 Cf. A003053, A071302, A071303, A071304, A071305, A071306, A071307, A071308, A071309, A071900. %K A071310 nonn,more %O A071310 1,2 %A A071310 _R. H. Hardin_, Jun 11 2002 %E A071310 a(6) from _Max Alekseyev_, Nov 06 2022 %E A071310 a(7) from _Sean A. Irvine_, Jul 11 2024