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Search: id:A001382
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| A001382 |
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Weight distribution of ternary [ 24,12,9 ] quadratic residue code (also of Pless symmetry code). |
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+0
2
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OFFSET
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0,4
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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. 620.
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LINKS
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G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
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EXAMPLE
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x^24 + 4048*x^15*y^9 + 61824*x^12*y^12 + 242880*x^9*y^15 + 198352*x^6*y^18 + 24288*x^3*y^21 + 48*y^24.
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PROGRAM
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(MAGMA) C:=QRCode(GF(3), 23); D:=ExtendCode(C); W<x, y>:=WeightEnumerator(D); W;
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CROSSREFS
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Cf. A112641 (cyclic version).
Sequence in context: A124728 A034229 A060896 this_sequence A090058 A035782 A108006
Adjacent sequences: A001379 A001380 A001381 this_sequence A001383 A001384 A001385
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KEYWORD
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nonn,fini,full
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AUTHOR
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njas
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