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%I #17 Jan 17 2022 10:09:32
%S 1,2,3,6,10,18,31,60,106,196,352
%N Size of smallest directed 1-covering code of length n with banded structure.
%H D. Applegate, E. M. Rains and N. J. A. Sloane, <a href="https://arxiv.org/abs/math/0205303">On asymmetric coverings and covering numbers</a>, arXiv:math/0205303 [math.CO], 2002; J. Comb. Des. 11 (2003), 218-228.
%H <a href="/index/Coa#covcod">Index entries for sequences related to covering codes</a>
%Y Provides upper bound for A066000.
%K nonn,hard,more,nice
%O 1,2
%A _N. J. A. Sloane_, Dec 07 2001
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