id:A029700 - OEIS Search Results

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Number of words of length 6 in the n(n-1)/2 transpositions of S[ n ] equivalent to the identity.

+0
1

1, 243, 3936, 20860, 72315, 197421, 460768, 961416, 1843245, 3306655, 5621616, 9142068, 14321671, 21730905, 32075520, 46216336, 65190393, 90233451, 122803840, 164607660, 217625331, 284139493, 366764256 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`n(n-1)(15n^4+30n^3-105n^2-700n+1344)/8`
	CROSSREFS	`Sequence in context: A100627 A016757 A133550 this_sequence A016769 A059860 A016841` `Adjacent sequences: A029697 A029698 A029699 this_sequence A029701 A029702 A029703`
	KEYWORD	`nonn`
	AUTHOR	`Paolo Dominici (pl.dm(AT)libero.it)`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research