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A145685 Weight distribution of [120,60,20] binary extended quadratic-residue (or QR) code. 0
1, 0, 0, 0, 0, 56896, 12886944, 2935906752, 320496430380, 18071400219840, 552526728803616, 9491105395362624, 94116098389459776, 549827720843995776, 1920594821540759296, 4051982879111857664 (list; graph; refs; listen; history; text; internal format)
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 56896

24 12886944

28 2935906752

32 320496430380

36 18071400219840

40 552526728803616

44 9491105395362624

48 94116098389459776

52 549827720843995776

56 1920594821540759296

60 4051982879111857664

64 5193576979998072832

68 4051982879111857664

72 1920594821540759296

76 549827720843995776

80 94116098389459776

84 9491105395362624

88 552526728803616

92 18071400219840

96 320496430380

100 2935906752

104 12886944

108 56896

128 1

CROSSREFS

Sequence in context: A288076 A031683 A202568 * A333951 A292788 A138597

Adjacent sequences:  A145682 A145683 A145684 * A145686 A145687 A145688

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane, Apr 02 2009

STATUS

approved

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Last modified June 16 19:49 EDT 2021. Contains 345068 sequences. (Running on oeis4.)