A034223 Number of ternary codes (not necessarily linear) of length n with 3 words.

1, 4, 10, 20, 35, 57, 87, 127, 179, 245, 327, 428, 550, 696, 869

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: A038419 A301208 A057319 * A266353 A139748 A373963

Adjacent sequences: A034220 A034221 A034222 * A034224 A034225 A034226

Keyword

nonn,more

Author

N. J. A. Sloane.

Extensions

a(11)-a(15) from Sean A. Irvine, Aug 07 2020

Status

approved