A034197 Number of binary codes of length 12 with n words.

1, 1, 12, 89, 2681, 158374, 22151853, 5244256701, 1653293013642, 584494025830394, 210237300968913438, 73212582945836596465, 24126483152959778734211, 7456837714994642537616273

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• fini

Comments

Last term is a(2^12) = 1. - Sean A. Irvine, Aug 07 2020

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.