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%I #2 Mar 30 2012 18:40:52
%S 1,10,66,366,1851,8858,40890,184098,813948,3549758,15317294,65537334,
%T 278489619,1176688494,4948173294,20723897214,86494746204,359915608314,
%U 1493718226314,6184858989714,25556291840484,105406847513658
%N Partial sums of A002055.
%C 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 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 a(9) = 1 + 9 + 56 + 300 + 1485 = 1851 = 3 * 617.
%Y Cf. A002055.
%K nonn
%O 5,2
%A _Jonathan Vos Post_, May 09 2010
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