A263628 A sequence B(2,n) arising from the enumeration of braids.

15, 90, 511, 2943, 16985, 98013

Offset

3,1

Comments

It would be nice to have a recurrence.

References

Iris Anshel, Personal communication, Oct 23 2015.

Links

Table of n, a(n) for n=3..8.

Crossrefs

Cf. A263629.

Sequence in context: A001297 A005716 A292055 * A263629 A320524 A218408

Adjacent sequences: A263625 A263626 A263627 * A263629 A263630 A263631

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 27 2015

Status

approved