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 A133402 #2 Mar 30 2012 18:59:20 %S A133402 1,96,405504,77007421440,661630022502580224, %T A133402 257876005135691663309537280,4565900567740737406606787243126292480, %U A133402 3675506444195600567841408683430769715388692299776 %N A133402 Hankel transform of A006588. %F A133402 a(n)=4^(n(n+1))*A127636(n); a(n)=A000244(n)*A051255(n)*A053765(n+1); %K A133402 easy,nonn %O A133402 0,2 %A A133402 _Paul Barry_, Jan 08 2008