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 A134183 #10 Mar 02 2022 02:08:20 %S A134183 0,1,16,768,131072,83886080,206158430208,1970324836974592, %T A134183 73786976294838206464,10880332376531662572355584, %U A134183 6338253001141147007483516026880 %N A134183 A Hankel transform of a Catalan product. %C A134183 -a(n) is the Hankel transform of A000108(n)*(2^n + 0^n)/2 = A003645(n-1). The Hankel transform of A003645(n) is 4^binomial(n+1, 2). %F A134183 a(n) = 4^binomial(n,2)*n*2^(n-1); %F A134183 a(n) = A053763(n)*A001787(n). %K A134183 easy,nonn %O A134183 0,3 %A A134183 _Paul Barry_, Oct 11 2007