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A126453
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Row sums of triangle A126450: a(n) = Sum_{k=0..n} C( C(n+2,3) - C(k+2,3) + 1, n-k).
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3
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1, 3, 15, 218, 7273, 434654, 40417797, 5369210845, 962496995941, 223528473482380, 65221305164439085, 23343099723197369886, 10052235133879615066675, 5126300310101866339983229
(list; graph; refs; listen; history; internal format)
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