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 A145163 #4 Aug 10 2014 06:45:21 %S A145163 1,2,11,112,1641,30140,645173,15451056,403860149,11337503566, %T A145163 338096504646,10626420868004,349970070311727,12024016865644052, %U A145163 429479863355216596,15904295505436515676,609244677411755423589 %N A145163 G.f. A(x) satisfies A(x/A(x)^2) = 1/(1-x)^2. %H A145163 Vaclav Kotesovec, <a href="/A145163/b145163.txt">Table of n, a(n) for n = 0..260</a> %F A145163 Self-convolution square of A145162. %F A145163 Self-convolution square yields A145164. %o A145163 (PARI) {a(n)=local(A=1+x+x*O(x^n),B);for(n=0,n,B=serreverse(x/A^2);A=1/(1-B)^2);polcoeff(A,n)} %Y A145163 Cf. A145162, A145164 (A^2). %K A145163 nonn %O A145163 0,2 %A A145163 _Paul D. Hanna_, Oct 03 2008