A034227 Number of ternary codes (not necessarily linear) of length n with 7 words.

0, 2, 846, 120213, 10274578, 664545445, 35754455353, 1670170058120, 69308975221311, 2593006992632304, 88403496753787431, 2769975679152779611, 80328533028556177478, 2168854415620301487498, 54799484013892849788339, 1301484769626282937741600

Offset

1,2

Links

Table of n, a(n) for n=1..16.

H. Fripertinger, Isometry Classes of Codes

H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.

Crossrefs

Cf. A034188-.

Sequence in context: A332182 A230396 A028485 * A324589 A145748 A141185

Adjacent sequences: A034224 A034225 A034226 * A034228 A034229 A034230

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Sean A. Irvine, Aug 08 2020

Status

approved