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A034216 Number of ternary codes of length 4 with n words. 1
1, 1, 4, 20, 144, 1245, 12473, 120213, 1067757, 8508432, 60801152, 391078610, 2277606189, 12079172109, 58646808981, 261900799332, 1080219903328, 4129996450120, 14683917874810, 48687786994190, 150930310833366 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Sean A. Irvine, Table of n, a(n) for n = 0..81

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: A098541 A004204 A160567 * A144009 A301270 A117887

Adjacent sequences:  A034213 A034214 A034215 * A034217 A034218 A034219

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 26 13:25 EDT 2021. Contains 347668 sequences. (Running on oeis4.)