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 A135349 #5 Aug 05 2015 08:49:31
%S A135349 1,30,22500,421875000,197753906250000,2317428588867187500000,
%T A135349 678934156894683837890625000000,
%U A135349 4972662281943485140800476074218750000000
%N A135349 6^n*5^(n^2).
%C A135349 Hankel transform of A130977 .
%F A135349 a(n)=6^n*5^(n^2)=A000400(n)*A060758(n).
%t A135349 Table[6^n*5^n^2,{n,0,8}] (* _Harvey P. Dale_, Aug 05 2015 *)
%K A135349 nonn
%O A135349 0,2
%A A135349 _Philippe Deléham_, Dec 07 2007