A034240 Number of quaternary codes of length 9 with n words.

1, 1, 9, 179, 40719, 106287822, 1295484202258, 28080454247154740, 720645869857713416245, 18726377123294059174412659, 464647323565599860735629425620, 10778588361453642047099243794276139

Offset

0,3

Comments

a(4^9)=1 is the last term. - Sean A. Irvine, Aug 08 2020

Links

Table of n, a(n) for n=0..11.

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: A304402 A358741 A034221 * A163132 A212704 A231726

Adjacent sequences: A034237 A034238 A034239 * A034241 A034242 A034243

Keyword

nonn,fini

Author

N. J. A. Sloane.

Status

approved