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A030062 Weight distribution of [ 96,48,12 ] doubly-even self-dual "octern" code. 0
1, 0, 0, 248, 9672, 3219288, 369688144, 18640824768, 422091297303, 4552776690944, 24292916390448, 65726628219120, 91448124030784, 65726628219120, 24292916390448, 4552776690944, 422091297303, 18640824768, 369688144, 3219288, 9672, 248, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

Chapman, Higher power residue codes, Finite Flds Applic. 3 (1997), 353-369.

LINKS

Table of n, a(n) for n=0..24.

MAPLE

f := x^8+14*x^4*y^4+y^8;

g := x^4*y^4*(x^4-y^4)^4;

f^12-168*f^9*g+7548*f^6*g^2-75672*f^3*g^3+30318*g^4;

seq(coeffs(coeff(%, x, 4*i)), i=0..degree(%)/4);

CROSSREFS

Sequence in context: A007245 A327959 A178967 * A030650 A299831 A045254

Adjacent sequences: A030059 A030060 A030061 * A030063 A030064 A030065

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Mar 19 2020

STATUS

approved

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Last modified December 6 04:35 EST 2022. Contains 358594 sequences. (Running on oeis4.)