id:A088042 - OEIS Search Results

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Number of permutations in the symmetric group S_n such that the size of their conjugacy class is odd.

+0
2

1, 2, 4, 4, 16, 76, 232, 106, 946, 5716, 27776, 63856, 272416, 2390480, 10349536, 2027026, 34459426, 344594404, 2618916472, 10475679736, 54997260256, 568305978472, 3132225435824, 1807129471456, 12047128545376 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Sum_{k=0..floor(n/2)} n!/(n-2k)!/k!/2^k(binomial(n-(n mod 2), 2*k) mod 2). - Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 06 2003`
	CROSSREFS	`Cf. A088994, A060632.` `Cf. A000085, A001189.` `Sequence in context: A038210 A154919 A019230 this_sequence A013140 A155720 A155725` `Adjacent sequences: A088039 A088040 A088041 this_sequence A088043 A088044 A088045`
	KEYWORD	`nonn`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 02 2003`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 03 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research