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A061126
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Number of degree-n permutations of order exactly 16.
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0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1307674368000, 22230464256000, 400148356608000, 5068545850368000, 101370917007360000, 1490152480008192000, 24977793950613504000, 343667682838351872000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,16
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FORMULA
| E.g.f.: - exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8) + exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8 + 1/16*x^16).
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CROSSREFS
| Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128.
Sequence in context: A083407 A088280 A011526 * A172537 A172717 A172799
Adjacent sequences: A061123 A061124 A061125 * A061127 A061128 A061129
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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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