A151818 Weight distribution of [127,64,21] primitive binary BCH code.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 41910, 201930, 1285494, 5570474, 21935186, 86053422, 323695568, 1156055600, 3886222860, 12694994676, 40367970699, 121103912097, 343251594420, 948989702220

Offset

0,22

Comments

Taken from the Terada-Asatani-Koumoto web site.

Links

Table of n, a(n) for n=0..34.

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

Example

The weight distribution is:
i A_i
0 1
21 41910
22 201930
23 1285494
24 5570474
25 21935186
26 86053422
27 323695568
28 1156055600
29 3886222860
30 12694994676
31 40367970699
32 121103912097
33 343251594420
34 948989702220
35 2561207717808
36 6545308612176
37 15848161044534
38 37535118263370
39 87006465675570
40 191414224486254
41 399875059409826
42 818791788315358
43 1644029128439104
44 3138601063383744
45 5699222325214544
46 10159483275382448
47 17784631560497592
48 29641052600829320
49 47047728573239600
50 73394456574253776
51 112556289078227904
52 164505345575871552
53 229181426369623980
54 314063436136151380
55 423412378312496636
56 544387343544638532
57 667583388554723748
58 805704089635011420
59 957102895925873760
60 1084716615382656928
61 1172938586845599112
62 1248612044061444216
63 1308537943108455059
64 1308537943108455059
65 1248612044061444216
66 1172938586845599112
67 1084716615382656928
68 957102895925873760
69 805704089635011420
70 667583388554723748
71 544387343544638532
72 423412378312496636
73 314063436136151380
74 229181426369623980
75 164505345575871552
76 112556289078227904
77 73394456574253776
78 47047728573239600
79 29641052600829320
80 17784631560497592
81 10159483275382448
82 5699222325214544
83 3138601063383744
84 1644029128439104
85 818791788315358
86 399875059409826
87 191414224486254
88 87006465675570
89 37535118263370
90 15848161044534
91 6545308612176
92 2561207717808
93 948989702220
94 343251594420
95 121103912097
96 40367970699
97 12694994676
98 3886222860
99 1156055600
100 323695568
101 86053422
102 21935186
103 5570474
104 1285494
105 201930
106 41910
127 1

Crossrefs

Sequence in context: A258689 A258685 A031849 * A374368 A186604 A345154

Adjacent sequences: A151815 A151816 A151817 * A151819 A151820 A151821

Keyword

nonn,fini

Author

N. J. A. Sloane, Jul 05 2009

Status

approved