id:A049212 - OEIS Search Results

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- Product(10*k-1,k=0..n); deca-factorial numbers.

+0
5

1, 9, 171, 4959, 193401, 9476649, 559122291, 38579438079, 3047775608241, 271252029133449, 26853950884211451, 2927080646379048159, 348322596919106730921, 44933615002564768288809 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Index entries for sequences related to factorial numbers`
	FORMULA	`a(n)= 9A035278(n) = (10n-1)(!^10), n >= 1, a(0) := 1.`
	CROSSREFS	`Cf. A008543, A049209-A049211, A048176.` `Sequence in context: A055407 A083155 A132897 this_sequence A141441 A027956 A003280` `Adjacent sequences: A049209 A049210 A049211 this_sequence A049213 A049214 A049215`
	KEYWORD	`easy,nonn`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research