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 A177452 #2 Mar 30 2012 18:40:52 %S A177452 1,10,66,366,1851,8858,40890,184098,813948,3549758,15317294,65537334, %T A177452 278489619,1176688494,4948173294,20723897214,86494746204,359915608314, %U A177452 1493718226314,6184858989714,25556291840484,105406847513658 %N A177452 Partial sums of A002055. %C A177452 Partial sums of number of diagonal dissections of a convex n-gon into n-4 regions. Partial sums of number of standard tableaux of shape (n-4,n-4,1,1). All values shown are nonprime. %F A177452 a(n) = SUM[i=5..n] A002055(i) = SUM[i=5..n] binomial(i-3, 2)*binomial(2*i-6, i-5)/(i-4). %e A177452 a(9) = 1 + 9 + 56 + 300 + 1485 = 1851 = 3 * 617. %Y A177452 Cf. A002055. %K A177452 nonn %O A177452 5,2 %A A177452 _Jonathan Vos Post_, May 09 2010