id:A106366 - OEIS Search Results

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Necklaces with n beads of 4 colors, no 2 adjacent beads the same color.

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4, 6, 8, 24, 48, 130, 312, 834, 2192, 5934, 16104, 44368, 122640, 341802, 956632, 2690844, 7596480, 21524542, 61171656, 174342216, 498112272, 1426419858, 4093181688, 11767920118, 33891544416, 97764131646, 282429537944 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to necklaces`
	FORMULA	`CycleBG transform of (4, 0, 0, 0, ...)` `CycleBG transform T(A) = invMOEBIUS(invEULER(Carlitz(A)) + A(x^2) - A) + A.` `Carlitz transform T(A(x)) has g.f. 1/(1-sum(k>0, (-1)^(k+1)*A(x^k))).`
	CROSSREFS	`Cf. A000031, A001868.` `Sequence in context: A083790 A074125 A063719 this_sequence A019160 A126233 A059889` `Adjacent sequences: A106363 A106364 A106365 this_sequence A106367 A106368 A106369`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Apr 29 2005`

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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