A110860 Number of even formally self-dual (but not self-dual) binary codes of length 2n that have the highest possible minimal distance.

0, 0, 1, 0, 1, 2, 9, 141

Offset

1,6

Links

Table of n, a(n) for n=1..8.

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

Crossrefs

Sequence in context: A173215 A110817 A189428 * A370556 A050995 A174954

Adjacent sequences: A110857 A110858 A110859 * A110861 A110862 A110863

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 19 2005

Status

approved