A278590 a(n) = A278589(n)/2^n.

1, 1, 4, 40, 778, 25306

Offset: 0

Author

N. J. A. Sloane, Dec 02 2016

Keywords

• nonn
• more

Links

• 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.