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 A208473 #12 Mar 30 2012 18:55:30
%S A208473 1,6,78,1100,16310,248724,3863244,60784152,965571750,15451970820,
%T A208473 248731275364,4022998982184,65326505787452,1064336612493000,
%U A208473 17390322931354200,284844148339840560,4675649304522319110,76895312195988615780
%N A208473 Central coefficients of triangle A185384.
%F A208473 a(n) = binomial(2n,n)*F(3n+1), where F(n) are the Fibonacci numbers (A000045).
%t A208473 Table[Binomial[2n,n]Fibonacci[3n+1],{n,0,100}]
%o A208473 (Maxima) makelist(binomial(2*n,n)*fib(3*n+1),n,0,17);
%K A208473 nonn,easy
%O A208473 0,2
%A A208473 _Emanuele Munarini_, Feb 29 2012