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A278590 a(n) = A278589(n)/2^n. 1
1, 1, 4, 40, 778, 25306 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..5.

Z. Hamaker, E. Marberg, B. Pawlowski, Involution words II: braid relations and atomic structures, arXiv preprint arXiv:1601.02269, 2016. See Remark following Th. 6.18.

CROSSREFS

Cf. A212417, A278589.

Sequence in context: A258662 A140701 A277748 * A087047 A211035 A053514

Adjacent sequences:  A278587 A278588 A278589 * A278591 A278592 A278593

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Dec 02 2016

STATUS

approved

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Last modified February 20 22:51 EST 2019. Contains 320362 sequences. (Running on oeis4.)