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A034199
Number of binary codes (not necessarily linear) of length n with 4 words.
0
0, 1, 6, 19, 47, 103, 203, 373, 649, 1079, 1727, 2681, 4048, 5969, 8620, 12218, 17028, 23378, 31654, 42324, 55941, 73155, 94725
OFFSET
1,3
LINKS
H. Fripertinger, Isometry Classes of Codes
H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
a(15)-a(23) from Sean A. Irvine, Aug 07 2020
STATUS
approved