A248383 Number of n-strand braids of length at most 3 in the dual monoid B_n^{+*}.

1, 5, 177, 2856, 147855, 9845829

Offset

1,2

Links

Table of n, a(n) for n=1..6.

Philippe Biane, Patrick Dehornoy, Dual Garside structure of braids and free cumulants of products, arXiv:1407.1604 [math.CO], (7-July-2014)

Crossrefs

Cf. A000108, A168344, A248382-A248386.

Sequence in context: A052272 A111515 A157204 * A200796 A241115 A208196

Adjacent sequences: A248380 A248381 A248382 * A248384 A248385 A248386

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 15 2014

Status

approved