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 A144636 #3 Jun 14 2013 10:41:14 %S A144636 0,1,-1,2,-5,10,35,-910,11935,-134750,1376375,-11761750,48923875, %T A144636 1209057850,-48943019125,1218200233250,-25136059573625, %U A144636 441933961719250,-5922915844470625,18956805373756250,2611377778731596875 %N A144636 Column 1 of triangle in A144633. %F A144636 E.g.f.: A(x)=B(x)-1/B(x)-1 where B(x)=(2+3*x+(5+12*x+9*x^2)^(1/2))^(1/3). [From _Vladeta Jovovic_, Jan 24 2009] %K A144636 sign %O A144636 0,4 %A A144636 _N. J. A. Sloane_, Jan 23 2009 %E A144636 More terms from _Vladeta Jovovic_, Jan 24 2009