id:A088506 - OEIS Search Results

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Number of permutations in the symmetric group S_n that have odd number of transpositions in their cycle decomposition.

+0
4

0, 1, 3, 6, 30, 240, 1680, 12600, 113400, 1149120, 12640320, 151351200 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = n! - A088336(n).`
	CROSSREFS	`Cf. A088336.` `Sequence in context: A090932 A133799 A088436 this_sequence A061137 A012280 A002164` `Adjacent sequences: A088503 A088504 A088505 this_sequence A088507 A088508 A088509`
	KEYWORD	`nonn`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 13 2003`

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