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A263629
A sequence B(3,n) arising from the enumeration of braids.
1
15, 90, 602, 4060, 28356, 200088
OFFSET
2,1
COMMENTS
It would be nice to have a recurrence.
REFERENCES
Iris Anshel, Personal communication, Oct 23 2015.
CROSSREFS
Cf. A263628.
Sequence in context: A005716 A292055 A263628 * A320524 A218408 A048630
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 27 2015
STATUS
approved