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A010091
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Weight distribution of d=4 Hamming code of length 31.
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0
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1, 0, 1085, 22568, 247845, 1383096, 4414865, 8280720, 9398115, 6440560, 2648919, 628680, 82615, 5208, 155
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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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. 129.
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LINKS
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Table of n, a(n) for n=0..14.
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FORMULA
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a(n) = A010086(2n). - Alois P. Heinz, Jul 14 2020
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MATHEMATICA
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m:=31; RecurrenceTable[{a[n]==(Binomial[m, n-1]-a[n-1]-(m-n+2)*a[n-2])/n,
a[0]==1, a[1]==0}, a, {n, 0, m}][[1;; m-2;; 2]] (* Georg Fischer, 14 Jul 2020; from the ref. p. 129 *)
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CROSSREFS
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Cf. A010086.
Sequence in context: A165809 A332069 A237804 * A206630 A191944 A157256
Adjacent sequences: A010088 A010089 A010090 * A010092 A010093 A010094
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KEYWORD
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nonn,fini,full
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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