id:A047056 - OEIS Search Results

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Quintuple factorial numbers: product[ k=0..n-1 ] (5*k+3).

+0
5

1, 3, 24, 312, 5616, 129168, 3616704, 119351232, 4535346816, 195019913088, 9360955828224, 496130658895872, 28775578215960576, 1812861427605516288, 123274577077175107584, 8999044126633782853632 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`E.g.f. (1-5x)^(-3/5)` `a(n) ~ 2^(1/2)pi^(1/2)Gamma(3/5)^-1n^(1/10)5^ne^-nn^n{1 - 11/300*n^-1 + ...}. - Joe Keane (jgk(AT)jgk.org), Nov 24 2001`
	CROSSREFS	`Cf. A047055, A008546.` `Sequence in context: A138209 A075142 A138428 this_sequence A003236 A082166 A010791` `Adjacent sequences: A047053 A047054 A047055 this_sequence A047057 A047058 A047059`
	KEYWORD	`nonn,easy`
	AUTHOR	`Joe Keane (jgk(AT)jgk.org)`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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