%I A051637
%S A051637 1,2,3,7,10
%N A051637 Chromos with n colors.
%D A051637 T. W. Cusick, P. Stanica, Counting the n-chromos of I.J. Schoenberg, 
               Journal of Combinatorial Theory, Ser. A, Vol. 79, No. 2, pp. 298-314.
%H A051637 P. Stanica, <a href="http://sciences.aum.edu/~stanpan/projects.htm">Chromos 
               and covering residue classes</a>, preprint, Dec., 1999.
%e A051637 a(2)=1 because 12 is the only chromo with two colors, a(3)=2 because 
               123 and 122133 are the only chromos with three colors.
%Y A051637 Sequence in context: A109800 A152136 A059180 this_sequence A051471 A047531 
               A102808
%Y A051637 Adjacent sequences: A051634 A051635 A051636 this_sequence A051638 A051639 
               A051640
%K A051637 hard,nice,nonn
%O A051637 2,2
%A A051637 Pantelimon Stanica (pstanica(AT)mail.aum.edu)
%E A051637 Next term is >=27.