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 A178955 #9 Mar 30 2012 16:51:57
%S A178955 1,-1,0,1,2,-2,-28,-65,338,3262,4352,-113082,-879140,1145012,68641120,
%T A178955 409571279,-3075414734,-67796919090,-235926569056,6635196777226,
%U A178955 98653814115636,-51631812077716,-17882630766156440,-190179698567684014,1532579370407751292,62028205219536446948,405883930741148425152,-11224575706163698420700,-269584771812788695251352,-338220005828087037972744
%N A178955 E.g.f. is inverse of e.g.f. for Catalan numbers.
%D A178955 Anthony Mendes and Jeffrey Remmel, Generating functions from symmetric functions, Preliminary version of book, available from Jeffrey Remmel's home page http://math.ucsd.edu/~remmel/, see p. 130.
%F A178955 The e.g.f. is 1/(Sum_{n >= 0} (x^n/n!)*binomial(2n,n)/(n+1)).
%Y A178955 See A178956/A178957 for the coefficients in the e.g.f. Cf. A000108, A144186/A144187.
%K A178955 sign
%O A178955 0,5
%A A178955 _N. J. A. Sloane_, Dec 31 2010