id:A001689 - OEIS Search Results

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5th differences of factorial numbers.
(Formerly M4531 N1920)

+0
7

8, 44, 309, 2428, 21234, 205056, 2170680, 25022880, 312273360, 4196666880, 60451816320, 929459059200, 15196285843200, 263309095526400, 4820517384883200, 92987329455820800, 1885246675183872000, 40080616912207872000, 891690242177839104000 (list; graph; listen)

	OFFSET	`-1,1`
	REFERENCES	`A. van Heemert, Cyclic permutations with sequences and related problems, J. Reine Angew. Math., 198 (1957), 56-72.`
	LINKS	`Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets` `Index entries for sequences related to factorial numbers`
	FORMULA	`a(n) = (n^5 + 10n^4 + 45n^3 + 100n^2 + 109n + 44)*n! - Mitch Harris (maharri(AT)gmail.com), Jul 10 2008`
	CROSSREFS	`Sequence in context: A082762 A126476 A112908 this_sequence A028565 A129553 A075863` `Adjacent sequences: A001686 A001687 A001688 this_sequence A001690 A001691 A001692`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research