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A124381
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O.g.f.: A(x) = Sum_{n>=0} x^n*Product_{k=0..n} (1 + k*(k+1)/2*x).
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0
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1, 1, 2, 5, 14, 48, 181, 772, 3620, 18511, 102869, 613584, 3926895, 26734671, 193310243, 1477081245, 11896869336, 100700815331, 893438783126, 8291513009130, 80302486087937, 810290260679230, 8502192961792190
(list; graph; refs; listen; history; internal format)
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