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A028239 Weight distribution of (64,2^52,6) Preparata code. 1
1, 0, 0, 41664, 2118168, 74203584, 1602647424, 23369897088, 238532662620, 1758643689600, 9579950593920, 39232098538560, 122387418032040, 293729091759936, 546275088069376, 791155554970368, 894836772921798 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier-North Holland, 1978, p. 471.

LINKS

Table of n, a(n) for n=0..16.

A. R. Hammons, Jr., P. V. Kumar, A. R. Calderbank, N. J. A. Sloane and P. Sole', The Z_4 linearity of Kerdock, Preparata, Goethals and related codes, IEEE Trans. Inform. Theory, 40 (1994), 301-319.

EXAMPLE

1+41664*y^6+2118168*y^8+74203584*y^10+1602647424*y^12+23369897088*y^14+238532662620*y^16+ 1758643689600*y^18+9579950593920*y^20+39232098538560*y^22+122387418032040*y^24+293729091759936*y^26+ 546275088069376*y^28+791155554970368*y^30+894836772921798*y^32+791155554970368*y^34+546275088069376*y^36 +293729091759936*y^38+122387418032040*y^40+39232098538560*y^42+9579950593920*y^44+1758643689600*y^46+ 238532662620*y^48+23369897088*y^50+1602647424*y^52+74203584*y^54+2118168*y^56+41664*y^58+1*y^64.

CROSSREFS

Cf. A010032, A109159.

Sequence in context: A253681 A178800 A031669 * A248445 A251978 A258689

Adjacent sequences:  A028236 A028237 A028238 * A028240 A028241 A028242

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 12 19:25 EST 2019. Contains 329078 sequences. (Running on oeis4.)