A105689 - OEIS

A105689

Number of codes having highest minimal Euclidean norm of any Type 4^Z self-dual code of length n over Z/4Z.

1, 1, 1, 2, 2, 3, 4, 1, 11, 16, 19, 19, 66, 35, 28

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

COMMENTS

There are two versions of this sequence, this and A111263. I am not sure which is correct.

LINKS

S. T. Dougherty, M. Harada and P. Solé, Shadow Codes over Z_4, Finite Fields Applic., 7 (2001), 507-529.

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.

E. M. Rains and N. J. A. Sloane, Self-dual codes, pp. 177-294 of Handbook of Coding Theory, Elsevier, 1998; (Abstract, pdf, ps).

CROSSREFS

Cf. A105682 for minimal distance. See also A066012-A066017.

KEYWORD

nonn,more

AUTHOR

STATUS

approved