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Search: id:A034912
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A034912 One sixth of octo-factorial numbers. +0
6
1, 14, 308, 9240, 351120, 16151520, 872182080, 54075288960, 3785270227200, 295251077721600, 25391592684057600, 2386809712301414400, 243454590654744268800, 26780004972021869568000 (list; graph; listen)
OFFSET

1,2

LINKS

Index entries for sequences related to factorial numbers

FORMULA

6*a(n) = (8*n-2)(!^8) := product(8*j-2, j=1..n) = 2^n*3*A034176(n), 3*A034176(n)= (4*n-1)(!^4) := product(4*j-1, j=1..n); E.g.f. (-1+(1-8*x)^(-3/4))/6.

CROSSREFS

Cf. A034176, A045755, A034908-A034911.

Adjacent sequences: A034909 A034910 A034911 this_sequence A034913 A034914 A034915

Sequence in context: A027401 A116165 A034834 this_sequence A035018 A133130 A090598

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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Last modified October 15 20:12 EDT 2008. Contains 145099 sequences.


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