id:A035273 - OEIS Search Results

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One quarter of deca-factorial numbers.

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1, 14, 336, 11424, 502656, 27143424, 1737179136, 128551256064, 10798305509376, 1015040717881344, 105564234659659776, 12034322751201214464, 1492256021148950593536, 199962306833959379533824 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n)= (Pochhammer(4/10,n)*10^n)/4.`
	LINKS	`Index entries for sequences related to factorial numbers`
	FORMULA	`4a(n) = (10n-6)(!^10) := product(10j-6, j=1..n)= 2^(n+1)A034323(n), 2A034323(n)= (5n-3)(!^5) := product(5j-3, j=1..n); E.g.f. (-1+(1-10x)^(-2/5))/4.`
	CROSSREFS	`Cf. A034323, A045757.` `Sequence in context: A133130 A090598 A060075 this_sequence A020143 A161927 A113673` `Adjacent sequences: A035270 A035271 A035272 this_sequence A035274 A035275 A035276`
	KEYWORD	`easy,nonn`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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