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 A145166 #4 Mar 13 2015 22:48:42
%S A145166 1,5,40,510,9095,203376,5323465,156499485,5035901400,174413579095,
%T A145166 6427089519606,249922852038280,10193367893772075,434056833951578950,
%U A145166 19227980415244742745,883565304511733011301,42019895809388715550450
%N A145166 G.f. A(x) satisfies A(x/A(x)) = 1/(1-x)^5.
%F A145166 Self-convolution 5th power of A145165.
%o A145166 (PARI) {a(n)=local(A=1+x+x*O(x^n),B);for(n=0,n,B=serreverse(x/A);A=1/(1-B)^5);polcoeff(A,n)}
%Y A145166 Cf. A145165.
%K A145166 nonn
%O A145166 0,2
%A A145166 _Paul D. Hanna_, Oct 03 2008