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Search: id:A035023
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| A035023 |
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One ninth of 9-factorial numbers. |
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+0
10
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| 1, 18, 486, 17496, 787320, 42515280, 2678462640, 192849310080, 15620794116480, 1405871470483200, 139181275577836800, 15031577762406374400, 1758694598201545804800, 221595519373394771404800
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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E.g.f. is G.f. for A001019(n-1) (powers of nine).
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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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9*a(n) = (9*n)(!^9) := product(9*j, j=1..n)= 9^n*n!; E.g.f. (-1+1/(1-9*x))/9.
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CROSSREFS
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Cf. A007559, A034171, A045756, A035012, A035013, A035017, A035018, A035020-A035023.
Sequence in context: A084273 A027405 A116176 this_sequence A126276 A035277 A011906
Adjacent sequences: A035020 A035021 A035022 this_sequence A035024 A035025 A035026
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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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