A034246 Number of quaternary codes (not necessarily linear) of length n with 9 words.

0, 26, 364843, 1502295684, 3667889498353, 6925787777638463, 11005421717482468773, 15234448027502727073180, 18726377123294059174412659, 20713142556674464760256080736, 20828433424562605033363194192578, 19200438068661753335735705157476694

Offset

1,2

Links

Table of n, a(n) for n=1..12.

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: A365983 A265959 A112946 * A145336 A271246 A005084

Adjacent sequences: A034243 A034244 A034245 * A034247 A034248 A034249

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

a(10)-a(12) from Sean A. Irvine, Aug 09 2020

Status

approved