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A121017
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Stirling transform of A104600.
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0
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1, 1, 6, 65, 1125, 28132, 950649, 41475961, 2259756900, 149874308367, 11858161118925, 1101069785060610, 118366544943589215, 14564702419742606497, 2031425158227034739646, 318472106732688712103885
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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FORMULA
| a(n) = 1/(2e) * Sum{r, s>=0, (rs)^n / [2^r s! ] }.
a(n) = A000670(n)*A000110(n). - Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 27 2006
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MAPLE
| a:=n->sum(stirling2(n, k)*k!*bell(n), k=0..n): seq(a(n), n=0..19); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Sep 30 2006
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CROSSREFS
| Sequence in context: A099343 A189509 A006959 * A137121 A110222 A119230
Adjacent sequences: A121014 A121015 A121016 * A121018 A121019 A121020
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KEYWORD
| easy,nonn
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AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 08 2006
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EXTENSIONS
| More terms from Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Sep 30 2006
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