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A001646
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Number of self-dual codes of length 2n over GF(4).
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1
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1, 1, 1, 2, 3, 5, 10, 21, 55, 245, 3427
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,4
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LINKS
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F. J. MacWilliams, A. M. Odlyzko, N. J. A. Sloane and H. N. Ward, Self-Dual Codes over GF(4), J. Combin. Theory, A 25 288-318 1978.
E. M. Rains and N. J. A. Sloane, Self-dual codes, pp. 177-294 of Handbook of Coding Theory, Elsevier, 1998 (Abstract, pdf, ps).
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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