id:A032184 - OEIS Search Results

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"CIJ" (necklace, indistinct, labeled) transform of 1,3,5,7...

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7

1, 4, 16, 96, 768, 7680, 92160, 1290240, 20643840, 371589120, 7431782400, 163499212800, 3923981107200, 102023508787200, 2856658246041600, 85699747381248000, 2742391916199936000, 93241325150797824000 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`C. G. Bower, Transforms (2)` `INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 565` `Index entries for sequences related to necklaces`
	FORMULA	`2^n*(n-1)! for n>1.` `E.g.f.: (1+2x)/(1-2x) - Paul Barry (pbarry(AT)wit.ie), May 26 2003`
	CROSSREFS	`Apart from initial term, same as A066318.` `Sequence in context: A131928 A098580 A027745 this_sequence A111976 A130683 A091040` `Adjacent sequences: A032181 A032182 A032183 this_sequence A032185 A032186 A032187`
	KEYWORD	`nonn,easy`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net)`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

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