

A109415


a(n) equals the (n*(n+1)/2)th partial sum of the selfconvolution 4th power of A010054, which has the g.f.: Sum_{k>=0} x^(k*(k+1)/2).


2



1, 5, 19, 58, 152, 309, 585, 1046, 1666, 2601, 3871, 5508, 7680, 10423, 13835, 17984, 23168, 29225, 36431, 45000, 54780, 66299, 79637, 94546, 111612, 131215, 152683, 177008, 204264, 234375, 267795, 304678, 345240, 389213, 438235, 490842, 548542
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