A030639 - OEIS

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

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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