A034192 Number of binary codes of length 7 with n words.

1, 1, 7, 23, 203, 1606, 18435, 221778, 2773763, 33297380, 375158732, 3907656327, 37504171766, 331785257145, 2712509085687, 20560611034067, 144992583036707, 954428916508309, 5882732966056385, 34048050206744705

Offset

0,3

Links

Sean A. Irvine, Table of n, a(n) for n = 0..128

H. Fripertinger, Isometry Classes of Codes

H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.

Crossrefs

Row n=7 of A039754.

Cf. A034188, A034189, A034190, A034191, A034193, A034194, A034195, A034196, A034197.

Sequence in context: A099051 A187487 A299643 * A050918 A322557 A228699

Adjacent sequences: A034189 A034190 A034191 * A034193 A034194 A034195

Keyword

nonn,fini,full

Author

N. J. A. Sloane

Status

approved