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A028239 Weight distribution of (64, 2^52, 6) Preparata code. 2
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

Sean A. Irvine, Table of n, a(n) for n = 0..32

A. R. Hammons, Jr., P. V. Kumar, A. R. Calderbank, N. J. A. Sloane and P. Solé, 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 + 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,full

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified October 30 20:11 EDT 2020. Contains 338090 sequences. (Running on oeis4.)