A030639 Weight distribution of [128,43,32] extended binary primitive BCH (or XBCH) code.

1, 0, 0, 0, 0, 0, 0, 0, 124460, 8810752, 263542272, 4521151232, 44899876672, 262118734080, 915924097536, 1931974003456, 2476672341286, 1931974003456, 915924097536, 262118734080, 44899876672, 4521151232, 263542272, 8810752, 124460, 0, 0, 0, 0, 0, 0, 0, 1

Offset

0,9

Comments

The design distance is 30.

Links

Table of n, a(n) for n=0..32.

M. Terada, J. Asatani and T. Koumoto, Weight Distribution

Example

The weight distribution is:
i A_i
0 1
32 124460
36 8810752
40 263542272
44 4521151232
48 44899876672
52 262118734080
56 915924097536
60 1931974003456
64 2476672341286
68 1931974003456
72 915924097536
76 262118734080
80 44899876672
84 4521151232
88 263542272
92 8810752
96 124460
128 1

Crossrefs

Sequence in context: A185992 A061734 A263081 * A261439 A182658 A282919

Adjacent sequences: A030636 A030637 A030638 * A030640 A030641 A030642

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Eric Rains

Extensions

More terms from Sean A. Irvine, Apr 05 2020

Status

approved