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A291781 Consider the Watanabe tag system defined in A291067; a(n) = number of binary words of length n which terminate in a cycle. 9
0, 0, 4, 12, 16, 32, 64, 128, 384, 704, 896, 2304, 4608, 7680, 16384, 36864, 65536, 143360, 303104, 565248, 1245184, 2473984, 4521984, 9961472, 19070976, 35389440, 78643200, 154664960, 289931264, 635437056, 1309671424, 2503999488, 5280628736 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Don Reble, Table of n, a(n) for n = 1..60

CROSSREFS

Cf. A284116, A291067, A291780.

Sequence in context: A270248 A228274 A273501 * A253122 A239413 A327295

Adjacent sequences:  A291778 A291779 A291780 * A291782 A291783 A291784

KEYWORD

nonn

AUTHOR

Don Reble and N. J. A. Sloane, Sep 01 2017

STATUS

approved

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Last modified October 1 12:59 EDT 2020. Contains 337443 sequences. (Running on oeis4.)