id:A106365 - OEIS Search Results

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Necklaces with n beads of 3 colors, no 2 adjacent beads the same color.

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3, 3, 2, 6, 6, 14, 18, 36, 58, 108, 186, 352, 630, 1182, 2190, 4116, 7710, 14602, 27594, 52488, 99878, 190746, 364722, 699252, 1342182, 2581428, 4971066, 9587580, 18512790, 35792568, 69273666, 134219796, 260301174, 505294128, 981706830 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to necklaces`
	FORMULA	`CycleBG transform of (3, 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, A001867.` `Sequence in context: A083343 A110898 A147994 this_sequence A086636 A115055 A158468` `Adjacent sequences: A106362 A106363 A106364 this_sequence A106366 A106367 A106368`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Apr 29 2005`

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

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