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A192561
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a(n) = sum(stirling1(n+1,k+1)^2*k!,k=0..n).
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0
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1, 2, 15, 235, 6150, 239596, 12934838, 921199238, 83488967768, 9367741437936, 1273270076895432, 205977064267447848, 39082297497546456816, 8591243344831665290592, 2165102057150152483834032, 619866690597157598321655216, 200017218987010519451515954560
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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Table[Sum[StirlingS1[n+1, k+1]^2k!, {k, 0, n}], {n, 0, 100}]
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PROG
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(Maxima) makelist(sum(stirling1(n+1, k+1)^2*k!, k, 0, n), n, 0, 24);
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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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