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Search: id:A028384
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| A028384 |
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Weight distribution of [ 47,24,11 ] binary quadratic-residue code. |
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+0
4
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| 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4324, 12972, 0, 0, 178365, 356730, 0, 0, 1664740, 2330636, 0, 0, 3840840, 3840840, 0, 0, 2330636, 1664740, 0, 0, 356730, 178365, 0, 0, 12972, 4324, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
(list; graph; listen)
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OFFSET
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0,12
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REFERENCES
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F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 494.
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LINKS
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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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x^47 + 4324*x^36*y^11 + 12972*x^35*y^12 + 178365*x^32*y^15 + 356730*x^31*y^16 +
1664740*x^28*y^19 + 2330636*x^27*y^20 + 3840840*x^24*y^23 + 3840840*x^23*y^24 +
2330636*x^20*y^27 + 1664740*x^19*y^28 + 356730*x^16*y^31 + 178365*x^15*y^32 +
12972*x^12*y^35 + 4324*x^11*y^36 + y^47.
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PROGRAM
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(MAGMA) C:=QRCode(GF(2), 47); W<x, y>:=WeightEnumerator(C); W;
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CROSSREFS
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Sequence in context: A055153 A145312 A008409 this_sequence A107542 A145916 A048900
Adjacent sequences: A028381 A028382 A028383 this_sequence A028385 A028386 A028387
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KEYWORD
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nonn,fini,full
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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