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A061132
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Number of degree-n even permutations of order dividing 10.
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12
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1, 1, 1, 1, 4, 40, 190, 610, 1660, 13420, 174700, 1326700, 30818800, 342140800, 2534931400, 16519411000, 143752426000, 4842417082000, 73620307162000, 687934401562000, 17165461784680000, 308493094924720000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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FORMULA
| E.g.f.: 1/2*exp(x + 1/2*x^2 + 1/5*x^5 + 1/10*x^10) + 1/2*exp(x - 1/2*x^2 + 1/5*x^5 - 1/10*x^10).
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CROSSREFS
| Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128, A000704, A061129 - A061132, A048099, A051695, A061133 - A061135.
Sequence in context: A199833 A163322 A009355 * A174644 A115286 A119635
Adjacent sequences: A061129 A061130 A061131 * A061133 A061134 A061135
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KEYWORD
| easy,nonn
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AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2001
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