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A034197 Number of binary codes of length 12 with n words. 10
1, 1, 12, 89, 2681, 158374, 22151853, 5244256701, 1653293013642, 584494025830394, 210237300968913438, 73212582945836596465, 24126483152959778734211, 7456837714994642537616273 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

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

LINKS

Table of n, a(n) for n=0..13.

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.

Sequence in context: A181944 A193285 A199558 * A217089 A245577 A156397

Adjacent sequences:  A034194 A034195 A034196 * A034198 A034199 A034200

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified March 2 12:26 EST 2021. Contains 341750 sequences. (Running on oeis4.)