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Search: id:A035018
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| A035018 |
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One fifth of 9-factorial numbers. |
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+0
9
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| 1, 14, 322, 10304, 422464, 21123200, 1246268800, 84746278400, 6525463436800, 561189855564800, 53313036278656000, 5544555772980224000, 626534802346765312000, 76437245886305368064000
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OFFSET
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1,2
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LINKS
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Index entries for sequences related to factorial numbers
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FORMULA
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5*a(n) = (9*n-4)(!^9) := product(9*j-4, j=1..n); E.g.f. (-1+(1-9*x)^(-5/9))/5.
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CROSSREFS
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Cf. A007559, A034171, A045756, A035012, A035013, A035017, A035018, A035020-A035023.
Sequence in context: A116165 A034834 A034912 this_sequence A133130 A090598 A060075
Adjacent sequences: A035015 A035016 A035017 this_sequence A035019 A035020 A035021
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KEYWORD
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easy,nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)
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