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 A133461 #3 Sep 08 2013 13:31:23 %S A133461 1,12,1296,1259712,11019960576,867623536069632,614787626176508399616, %T A133461 3920680210114437604803919872,225029902846690098194536797915119616, %U A133461 116241593333982893165313951169026429498949632 %N A133461 4^n*3^(n^2). %F A133461 Hankel transform of A039610. %F A133461 a(n)=4^n*3^(n^2)=A000302(n)*A060722(n). %K A133461 easy,nonn %O A133461 0,2 %A A133461 _Philippe Deléham_, Nov 28 2007