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A034224
Number of ternary codes (not necessarily linear) of length n with 4 words.
0
0, 5, 34, 144, 490, 1470, 3990, 10045, 23750, 53205, 113694, 233039, 460096, 878269, 1626034
OFFSET
1,2
LINKS
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: A317297 A135973 A186636 * A167023 A316559 A284850
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
a(11)-a(15) from Sean A. Irvine, Aug 08 2020
STATUS
approved