A080477 Weight distribution of [120,60,20] double circulant code.

1, 0, 0, 0, 0, 71862, 38266515, 6114942900, 475562216745, 18824858869630, 397449398883096, 4630515150103920, 30531593455793640, 116023986363853264, 257257754706576192, 335200293307691456

Offset

0,6

Comments

Taken from the Tjhai-Tomlinson web site.

Links

Table of n, a(n) for n=0..15.

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
20 71862
24 38266515
28 6114942900
32 475562216745
36 18824858869630
40 397449398883096
44 4630515150103920
48 30531593455793640
52 116023986363853264
56 257257754706576192
60 335200293307691456
64 257257754706576192
68 116023986363853264
72 30531593455793640
76 4630515150103920
80 397449398883096
84 18824858869630
88 475562216745
92 6114942900
96 38266515
100 71862
120 1

Crossrefs

Sequence in context: A025292 A025310 A187312 * A376469 A234330 A333684

Adjacent sequences: A080474 A080475 A080476 * A080478 A080479 A080480

Keyword

nonn,fini

Author

N. J. A. Sloane, Apr 19 2009

Status

approved