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 A102053 #4 Mar 30 2012 18:36:44
%S A102053 1,-7,36,-170,775,-3481,15542,-69276,308945,-1380035,6178088,
%T A102053 -27725806,124743163,-562660125,2544153290,-11530989904,52380358293,
%U A102053 -238450946439,1087698574940,-4971055063490,22760027348511,-104384818070017,479513717931486,-2206100494746180
%N A102053 Column 2 of triangle A102051, which is the matrix inverse of triangle A101275 (number of Schroeder paths).
%F A102053 G.f.: 32*(1-x)^2/(1+sqrt(1+4*x-4*x^2))^5.
%o A102053 (PARI) {a(n)=polcoeff(32*(1-x)^2/(1+sqrt(1+4*x-4*x^2))^5,n)}
%Y A102053 Cf. A101275, A102051.
%K A102053 sign
%O A102053 0,2
%A A102053 _Paul D. Hanna_, Dec 27 2004