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A111265
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Number of strictly Type II self-dual codes over F_2 + u*F_2 of length 4n.
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0
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OFFSET
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1,1
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REFERENCES
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W. C. Huffman, On the classification and enumeration of self-dual codes, Finite Fields Applic., 11 (2005), 451-490.
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LINKS
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Table of n, a(n) for n=1..4.
G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
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CROSSREFS
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Sequence in context: A218294 A112487 A089469 * A003093 A006679 A050390
Adjacent sequences: A111262 A111263 A111264 * A111266 A111267 A111268
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Nov 02 2005
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STATUS
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approved
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