A056197 - OEIS

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A056197

Diagonal of A056151.

1, 7, 38, 222, 1464, 10920, 91440, 851760, 8749440, 98340480, 1201132800, 15846969600, 224651750400, 3406180377600, 55009501747200, 942833219328000, 17093919338496000, 326876746420224000, 6575237795782656000 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..18.`
	FORMULA	`a(n)=(3n^2+3n+1)n!=((n+1)^3-n^3)n!=n!A003215(n). - Paul Barry, Apr 02 2003`
	MATHEMATICA	`Table[(3n(n+1)+1)n!, {n, 0, 18}]`
	CROSSREFS	`Sequence in context: A104553 A027241 A226200 * A158576 A215441 A027482` `Adjacent sequences: A056194 A056195 A056196 * A056198 A056199 A056200`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane, Aug 05 2000`
	EXTENSIONS	`More terms from Wouter Meeussen, Aug 05 2000`
	STATUS	`approved`

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Last modified June 18 22:35 EDT 2013. Contains 226356 sequences.