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Search: id:A061130
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| A061130 |
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Number of degree-n even permutations of order dividing 6. |
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+0
1
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| 1, 1, 1, 3, 12, 36, 126, 666, 6588, 44892, 237996, 2204676, 26370576, 219140208, 1720782792, 19941776856, 234038005776, 2243409386256, 23225205107088, 295070141019312, 4303459657780416, 55200265166477376, 660776587455193056
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OFFSET
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0,4
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FORMULA
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E.g.f.: 1/2*exp(x + 1/2*x^2 + 1/3*x^3 + 1/6*x^6) + 1/2*exp(x - 1/2*x^2 + 1/3*x^3 - 1/6*x^6).
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CROSSREFS
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Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128, A000704, A061129 - A061132, A048099, A051695, A061133 - A061135.
Adjacent sequences: A061127 A061128 A061129 this_sequence A061131 A061132 A061133
Sequence in context: A135190 A101069 A027327 this_sequence A004661 A074430 A064028
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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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