%I #5 Oct 27 2015 13:19:14
%S 15,90,602,4060,28356,200088
%N A sequence B(3,n) arising from the enumeration of braids.
%C It would be nice to have a recurrence.
%D Iris Anshel, Personal communication, Oct 23 2015.
%Y Cf. A263628.
%K nonn,more
%O 2,1
%A _N. J. A. Sloane_, Oct 27 2015