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Search: id:A061123
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| A061123 |
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Number of degree-n permutations of order exactly 9. |
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+0
2
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| 0, 0, 0, 0, 0, 0, 0, 0, 40320, 403200, 2217600, 26611200, 259459200, 1695133440, 16345929600, 161902540800, 1208560953600, 50830132953600, 866513503215360, 8470676211379200, 166891791625977600, 2699606616475507200
(list; graph; listen)
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OFFSET
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1,9
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FORMULA
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E.g.f.: -exp(x+1/3*x^3)+exp(x+1/3*x^3+1/9*x^9).
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CROSSREFS
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Cf. A000085, A001470, A001472, A052501, A053496-A053505, A001189, A001471, A001473, A061121-A061128.
Sequence in context: A076778 A127228 A090394 this_sequence A029576 A133068 A133359
Adjacent sequences: A061120 A061121 A061122 this_sequence A061124 A061125 A061126
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KEYWORD
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easy,nonn
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AUTHOR
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Vladeta Jovovic (vladeta(AT)Eunet.yu), Apr 14 2001
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