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A045630 Number of 2n-bead black-white complementable strings with n black beads and fundamental period 2n. +0
3
1, 1, 2, 9, 32, 125, 450, 1715, 6400, 24300, 92250, 352715, 1351584, 5200299, 20056582, 77558625, 300533760, 1166803109, 4537542888, 17672631899, 68923172000, 269128935495, 1052049129142, 4116715363799, 16123800483072 (list; graph; listen)
OFFSET

0,3
FORMULA

Moebius transform of A001700(n-1) (Christian Bower).

CROSSREFS

Cf. A007727.

Sequence in context: A076959 A003697 A006253 this_sequence A075364 A026526 A086607

Adjacent sequences: A045627 A045628 A045629 this_sequence A045631 A045632 A045633

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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