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0, 1, 5, 25, 141, 911, 6703, 55581, 513929, 5248891, 58724211, 714554633, 9397715341, 132870076119, 2009977939271, 32396622193141, 554297204755473, 10034223725151731, 191617109450287579, 3849745645109036001
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) = Sum_{k=0..n-1} C(n,k)*(k+1)! = Sum_{k=0..n-1} A074909(n-1,k)*(k+1)!. - Anton Zakharov, Sep 26 2016
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MATHEMATICA
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CoefficientList[Series[(E^x-1)/(1-x)^2, {x, 0, 20}], x]*Range[0, 20]! (* Vaclav Kotesovec, Nov 20 2012 *)
Table[Sum[Binomial[n, k] (k + 1)!, {k, 0, n - 1}], {n, 0, 19}] (* Michael De Vlieger, Sep 27 2016 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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