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A049427
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Row sums of triangle A049424.
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3
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1, 1, 5, 25, 145, 1025, 8245, 72745, 704705, 7424065, 83940805, 1012504505, 12972555025, 175624847425, 2501468566325, 37364323364425, 583569693556225, 9504040277271425, 161021013457176325, 2832196631069755225, 51619359912771959825
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..20.
W. Lang, On generalizations of Stirling number triangles, J. Integer Seqs., Vol. 3 (2000), #00.2.4.
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FORMULA
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E.g.f.: exp((-1+(1+x)^5)/5).
a(n) = n! * sum(k=0..n, sum(j=0..k, binomial(5*j,n) * (-1)^(k-j)/(5^k * (k-j)!*j!))). [From Vladimir Kruchinin, Feb 7 2011]
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CROSSREFS
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Sequence in context: A114870 A222676 A199319 * A121639 A098349 A098212
Adjacent sequences: A049424 A049425 A049426 * A049428 A049429 A049430
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KEYWORD
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easy,nonn
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AUTHOR
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Wolfdieter Lang
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STATUS
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approved
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