A034221 Number of ternary codes of length 9 with n words.

1, 1, 9, 179, 23750, 17404018, 30640203562, 69308975221311, 158348647910702036, 337705364634088701870, 658924882943438469999753, 1175202923618550525380785445, 1924770620147760792778941634653

Offset

0,3

Comments

a(3^9)=1 is the last term. - Sean A. Irvine, Aug 07 2020

Links

Table of n, a(n) for n=0..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: A220267 A304402 A358741 * A034240 A163132 A212704

Adjacent sequences: A034218 A034219 A034220 * A034222 A034223 A034224

Keyword

nonn,fini

Author

N. J. A. Sloane.

Status

approved