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Search: id:A028239
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| A028239 |
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Weight distribution of (64,2^52,6) Preparata code. |
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+0
2
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| 1, 0, 0, 41664, 2118168, 74203584, 1602647424, 23369897088, 238532662620, 1758643689600, 9579950593920, 39232098538560, 122387418032040, 293729091759936, 546275088069376, 791155554970368, 894836772921798
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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. 471.
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LINKS
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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.
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EXAMPLE
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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.
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CROSSREFS
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Cf. A010032, A109159.
Sequence in context: A165114 A002879 A163392 this_sequence A031849 A151818 A103155
Adjacent sequences: A028236 A028237 A028238 this_sequence A028240 A028241 A028242
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KEYWORD
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nonn,fini
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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