A034221 - OEIS

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A034221

Number of ternary codes of length 9 with n words.

0

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

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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

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