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%I #14 Feb 02 2020 21:40:58
%S 1,1,1,1,1,1,2,2,2,3,2,3,4,6,9,4,6,6,9,12,18,8,8,12,18,22,33,38,16,16,
%T 22,28,42
%N Square array T(n,k) giving maximal numbers of codewords in mixed code with n binary coordinates and k ternary coordinates with Hamming distance 3, read by antidiagonals (n >= 0, k >= 0).
%H Patric R. J. Östergård, <a href="https://users.aalto.fi/~pat/23.html">Classification of small binary/ternary one-error-correcting codes (Appendix)</a>, Discrete Mathematics 223 (2000), 253-262.
%e Array begins:
%e 1, 1, 1, 3, 9, ...
%e 1, 1, 2, 6, 12, ...
%e 1, 2, 4, 9, 22, ...
%e 2, 3, 6, 18, 42, ...
%e ...
%Y Rows and columns give A057574-A057584.
%K nonn,tabl,more
%O 0,7
%A _N. J. A. Sloane_, Oct 05 2000
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