A034244 Number of quaternary codes (not necessarily linear) of length n with 7 words.

0, 26, 10164, 2097080, 311400852, 37593032352, 3874477609666, 349607878149545, 28080454247154740, 2032851550702238097, 133978506596448850047, 8105582683474629450826

Offset

1,2

Links

Table of n, a(n) for n=1..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: A196427 A265979 A058449 * A263222 A265877 A015060

Adjacent sequences: A034241 A034242 A034243 * A034245 A034246 A034247

Keyword

nonn,more

Author

N. J. A. Sloane.

Extensions

a(10)-a(12) from Sean A. Irvine, Aug 09 2020

Status

approved