%I
%S 0,0,0,0,0,0,0,0,4,24,92,292,850,2276,5766,13968,32690,74368,165442,
%T 361104,776116,1646566,3456030,7189232,14844878,30464914
%N Number of binary words of length n that are not rich.
%H Amy Glen, Jacques Justin, Steve Widmer and Luca Q. Zamboni, <a href="http://arxiv.org/abs/0801.1656v3">Palindromic richness</a>, arXiv:0801.1656 [math.CO]
%F 2^n  A216264(n).
%Y Cf. A216264.
%K nonn,more
%O 0,9
%A _N. J. A. Sloane_, May 16 2013
