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A263628 A sequence B(2,n) arising from the enumeration of braids. 1
15, 90, 511, 2943, 16985, 98013 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 16 08:26 EST 2019. Contains 320159 sequences. (Running on oeis4.)