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A028384 Weight distribution of [ 47,24,11 ] binary quadratic-residue code. 2
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; refs; listen; history; text; internal format)
OFFSET

0,12

REFERENCES

F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 494.

LINKS

Table of n, a(n) for n=0..47.

C. J. Tjhai and Martin Tomlinson, Weight Distributions of Quadratic Residue and Quadratic Double Circulant Codes over GF(2)

EXAMPLE

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.

PROG

(MAGMA) C:=QRCode(GF(2), 47); W<x, y>:=WeightEnumerator(C); W;

CROSSREFS

Sequence in context: A320729 A233641 A202787 * A107542 A300359 A299704

Adjacent sequences:  A028381 A028382 A028383 * A028385 A028386 A028387

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 22 07:26 EDT 2021. Contains 343163 sequences. (Running on oeis4.)