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A110865
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Number of Type I but not Type II additive Hermitian self-dual codes of length n over GF(4).
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0
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1, 1, 3, 4, 11, 20, 59, 161, 675, 3862, 45144, 1320284
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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REFERENCES
| L. E. Danielsen and M. G. Parker, On the classification of all self-dual additive codes over GF(4) of length up to 12, Preprint 2005.
W. C. Huffman, On the classification and enumeration of self-dual codes, Finite Fields Applic., 11 (2005), 451-490.
W. C. Huffman, Additive self-dual codes over F_4 with an automorphism of odd prime order, Adv. Math. Commun., 1 (2007), 357-398.
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LINKS
| G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
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CROSSREFS
| Sequence in context: A097072 A049977 A000677 * A152982 A001642 A001643
Adjacent sequences: A110862 A110863 A110864 * A110866 A110867 A110868
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 19 2005
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