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A065954
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Nearest integer to (-1)^n*n!*(E(n,2)-E(n,1)*E(n-1,1)) where E(n,x) = Sum_{k=0..n} (-1)^k*x^k/k!.
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0
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1, 2, 3, 5, 9, 15, 26, 48, 87, 160, 296, 551, 1032, 1941, 3663, 6936, 13171, 25076, 47853, 91515, 175351, 336586, 647131, 1246070, 2402691, 4638908, 8967212, 17353538, 33618332, 65191863, 126535914, 245818071, 477938270, 929968028
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| 1, 2, 3, 5, 17/2, 89/6, 211/8, 1903/40, 62473/720, ...
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CROSSREFS
| Cf. A065952-A065956.
Sequence in context: A003065 A005169 A129852 * A067847 A022858 A090905
Adjacent sequences: A065951 A065952 A065953 * A065955 A065956 A065957
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 08 2001
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