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 A126603 #4 Mar 31 2012 10:22:02
%S A126603 1,12,444,60528,31951200,66495244096
%N A126603 Number of real {0,1}-matrices of size n X n which are not robust (cf. A125587).
%C A126603 a(n) = 2^(n^2) - A125587(n) = A002416(n) - A125587(n). - _Klaus Brockhaus_, Jan 08 2007
%Y A126603 Cf. A125587, A002416.
%K A126603 nonn,more
%O A126603 1,2
%A A126603 _Artur Jasinski_, Jan 06 2007
%E A126603 a(5) and a(6) (from A125587) from _Klaus Brockhaus_, Jan 08 2007