%I #8 Mar 30 2012 18:35:07
%S 0,0,0,0,0,0,0,0,0,0,1,3,8,20,48,112,256,576,1280,3280,7968,17840,
%T 39487,86587,188396,407230,875320,1872332,4218648,9382099,20646176,
%U 44125836,93902740
%N Number of subsets of { 1, ..., n } containing an A.P. of length 10.
%K nonn
%O 0,12
%A _David W. Wilson_