A091849 - OEIS

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A091849

Maximal size of (n,4,2) optical orthogonal code.

%I #9 Mar 12 2019 11:47:06

%S 1,1,1,3,3,3,4,6,7,8,9,11,12,14,15,17,18

%N Maximal size of (n,4,2) optical orthogonal code.

%C Conjectured to agree with A091848 except for n = 9 and 13.

%H W. Chu and C. J. Colbourn, <a href="https://doi.org/10.1016/S0012-365X(03)00266-8">Optimal (n,4,2)-OCC of small orders</a>, Discrete Math., 279 (2004), 163-172.

%Y Cf. A091848.

%K nonn,more

%O 7,4

%A _N. J. A. Sloane_, Mar 13 2004