A091326 Total number of inequivalent even binary linear codes of length n and any dimension k = 0, 1, ..., n-1.

1, 2, 3, 6, 9, 18, 31, 64, 123

Offset

1,2

Comments

"Even" means that every word has even weight. Equivalently, the all-ones vector is in the dual code.

Links

Table of n, a(n) for n=1..9.

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

Index entries for sequences related to binary linear codes

Crossrefs

Row sums of A091325.

Sequence in context: A218543 A266925 A018518 * A113863 A085431 A108862

Adjacent sequences: A091323 A091324 A091325 * A091327 A091328 A091329

Keyword

nonn,more

Author

N. J. A. Sloane, Mar 01 2004

Status

approved