A110871 - OEIS

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A110871

Number of strictly Type I self-dual codes over Z/4Z.

0

1, 1, 1, 2, 2, 3, 4, 7, 11, 16, 19, 58, 66, 170, 290

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OFFSET

1,4

LINKS

Table of n, a(n) for n=1..15.

W. C. Huffman, On the classification and enumeration of self-dual codes, Finite Fields Applic., 11 (2005), 451-490.

G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.

CROSSREFS

Sequence in context: A336030 A245620 A059348 * A243856 A173433 A053638

Adjacent sequences: A110868 A110869 A110870 * A110872 A110873 A110874

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Sep 19 2005

STATUS

approved