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A134975
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Weight distribution of [127,64,19] binary quadratic-residue (or QR) code.
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0
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1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8890, 48006, 0, 0, 2416302, 10470642, 0, 0, 642229602, 2293677150, 0, 0, 80124107595, 240372322785, 0, 0, 5082581311830, 12988818908010, 0, 0, 172664602751130, 379862126052486, 0
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OFFSET
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0,20
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COMMENTS
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Taken from the Tjhai-Tomlinson web site.
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LINKS
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Table of n, a(n) for n=0..41.
C. J. Tjhai and Martin Tomlinson, Weight Distributions of Quadratic Residue and Quadratic Double Circulant Codes over GF(2)
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EXAMPLE
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The weight distribution is:
i A_i
0 1
19 8890
20 48006
23 2416302
24 10470642
27 642229602
28 2293677150
31 80124107595
32 240372322785
35 5082581311830
36 12988818908010
39 172664602751130
40 379862126052486
43 3262567479655902
44 6228537915706722
47 35293536896047416
48 58822561493412360
51 223367511592873280
52 326460209251122496
55 840260234424082176
56 1080334587116677120
59 1899366974583683328
60 2152615904528174336
63 2596788489999036416
64 2596788489999036416
67 2152615904528174336
68 1899366974583683328
71 1080334587116677120
72 840260234424082176
75 326460209251122496
76 223367511592873280
79 58822561493412360
80 35293536896047416
83 6228537915706722
84 3262567479655902
87 379862126052486
88 172664602751130
91 12988818908010
92 5082581311830
95 240372322785
96 80124107595
99 2293677150
100 642229602
103 10470642
104 2416302
107 48006
108 8890
127 1
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CROSSREFS
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Sequence in context: A209712 A167290 A043524 * A037192 A206235 A185321
Adjacent sequences: A134972 A134973 A134974 * A134976 A134977 A134978
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KEYWORD
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nonn,fini
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AUTHOR
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N. J. A. Sloane, Apr 11 2009
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STATUS
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approved
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