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%I #7 Jan 13 2020 11:00:51
%S 6,14,17,21,22,23,24,27,28,30,31,33,34,35,36,37,38,39
%N Lengths n for which no normal sequence exists.
%C See the reference for the precise definition.
%H D. Z. Dokovic, <a href="https://doi.org/10.1016/j.disc.2010.03.007">On the base sequence conjecture</a>, Discr. Math., 310 (2010), 1956-1964.
%K nonn,more
%O 1,1
%A _N. J. A. Sloane_, Jun 12 2010
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