It would be nice to have a recurrence.
Iris Anshel, Personal communication, Oct 23 2015.
Table of n, a(n) for n=3..8.
Sequence in context: A001297 A005716 A292055 * A263629 A320524 A218408
Adjacent sequences: A263625 A263626 A263627 * A263629 A263630 A263631
N. J. A. Sloane, Oct 27 2015