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A034246 Number of quaternary codes (not necessarily linear) of length n with 9 words. 0
0, 26, 364843, 1502295684, 3667889498353, 6925787777638463, 11005421717482468773, 15234448027502727073180, 18726377123294059174412659, 20713142556674464760256080736, 20828433424562605033363194192578, 19200438068661753335735705157476694 (list; graph; refs; listen; history; text; internal format)
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: A092212 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

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Last modified October 21 07:46 EDT 2021. Contains 348150 sequences. (Running on oeis4.)