%I #10 Aug 27 2015 02:28:10
%S 1,2,3,7,10
%N Chromos with n colors.
%H T. W. Cusick, P. Stanica, <a href="http://dx.doi.org/10.1006/jcta.1997.2787">Counting the n-chromos of I.J. Schoenberg</a>, Journal of Combinatorial Theory, Ser. A, Vol. 79, No. 2, pp. 298-314.
%H P. Stanica, <a href="http://faculty.nps.edu/pstanica/projects.htm">Chromos and covering residue classes</a>, preprint, Dec., 1999.
%e 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.
%K hard,more,nice,nonn
%O 2,2
%A Pantelimon Stanica (pstanica(AT)mail.aum.edu)
%E Next term is >=27.
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