A145657 Weight distribution of [74,37,14] binary extended quadratic-residue (or QR) code.

1, 0, 0, 0, 0, 0, 0, 8103, 89133, 1093905, 8481140, 53285328, 254815041, 961185963, 2871214319, 6824006274, 13019584383, 19988042838, 24737670308, 24737670308, 19988042838, 13019584383, 6824006274

Offset

0,8

Comments

Taken from the Tjhai-Tomlinson web site.

Links

Table of n, a(n) for n=0..22.

C. J. Tjhai and Martin Tomlinson, Weight Distributions of Quadratic Residue and Quadratic Double Circulant Codes over GF(2)

Example

The weight distribution is:
i A_i
0 1
14 8103
16 89133
18 1093905
20 8481140
22 53285328
24 254815041
26 961185963
28 2871214319
30 6824006274
32 13019584383
34 19988042838
36 24737670308
38 24737670308
40 19988042838
42 13019584383
44 6824006274
46 2871214319
48 961185963
50 254815041
52 53285328
54 8481140
56 1093905
58 89133
60 8103
74 1

Crossrefs

Sequence in context: A172843 A258541 A031588 * A224727 A163045 A069368

Adjacent sequences: A145654 A145655 A145656 * A145658 A145659 A145660

Keyword

nonn,fini

Author

N. J. A. Sloane, Mar 20 2009

Status

approved