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A001099
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a(n) = n^n - a(n-1).
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0
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1, 3, 24, 232, 2893, 43763, 779780, 15997436, 371423053, 9628576947, 275683093664, 8640417354592, 294234689237661, 10817772136320355, 427076118244539020, 18019667955465012596, 809220593930871751581
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| Absolute value of Sum[k^k*(-1)^(k+1),{k,1,n}]. a(n) = n^n - (n-1)^(n-1) + (n-2)^(n-2) - ... - (-1)^n*1^1. - Alexander Adamchuk (alex(AT)kolmogorov.com), Jun 30 2006
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MATHEMATICA
| Abs[Table[Sum[k^k*(-1)^(k+1), {k, 1, n}], {n, 1, 30}]] - Alexander Adamchuk (alex(AT)kolmogorov.com), Jun 30 2006
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CROSSREFS
| Cf. A001923.
Sequence in context: A063979 A073978 A000279 * A080523 A203423 A194957
Adjacent sequences: A001096 A001097 A001098 * A001100 A001101 A001102
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KEYWORD
| nonn
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AUTHOR
| Ed Smiley [ esmiley(AT)meridian-data.com ]
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