A034199 Number of binary codes (not necessarily linear) of length n with 4 words.

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

Author

N. J. A. Sloane

Keywords

• nonn
• more

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, A034189, A034190, A034191, A034192, A034193, A034194, A034195, A034196, A034197, A034198.

Extensions

a(15)-a(23) from Sean A. Irvine, Aug 07 2020