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Search: id:A002745
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| A002745 |
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Sum of logarithmic numbers.
(Formerly M3909 N1604)
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+0
1
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| 1, 5, 20, 96, 469, 3145, 20684, 173544, 1557105, 16215253, 159346604, 2230085528, 26985045333, 368730610729, 5628888393652, 97987283458928, 1475486672174337, 29097611462122437, 505383110562327268, 10970329921706735216
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
J. M. Gandhi, On logarithmic numbers, Math. Student, 31 (1963), 73-83.
J. O. Shallit, personal communication.
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LINKS
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Index entries for sequences related to logarithmic numbers
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FORMULA
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a(n) = Sum_{k=1..n} A000203(k)*(k-1)!*binomial(n, k). - Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 09 2003
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CROSSREFS
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Sequence in context: A099014 A011966 A017966 this_sequence A020046 A026118 A108509
Adjacent sequences: A002742 A002743 A002744 this_sequence A002746 A002747 A002748
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 09 2003
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