A034224 Number of ternary codes (not necessarily linear) of length n with 4 words.

0, 5, 34, 144, 490, 1470, 3990, 10045, 23750, 53205, 113694, 233039, 460096, 878269, 1626034

Offset

1,2

Links

Table of n, a(n) for n=1..15.

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: A317297 A135973 A186636 * A167023 A316559 A284850

Adjacent sequences: A034221 A034222 A034223 * A034225 A034226 A034227

Keyword

nonn,more

Author

N. J. A. Sloane.

Extensions

a(11)-a(15) from Sean A. Irvine, Aug 08 2020

Status

approved