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A010334 Maximal size of binary code of length n and asymmetric distance 4. 0
1, 1, 1, 2, 2, 2, 2, 4, 4, 6, 8, 12, 18 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

T. Etzion, New lower bounds for asymmetric and unidirectional codes, IEEE Trans. Inform. Theory, 37 (1991), 1696-1705.

J. H. Weber, Bounds and Constructions for Binary Block Codes Correcting Asymmetric or Unidirectional Errors, Ph. D. Thesis, Tech. Univ. Delft, 1989.

J. H. Weber, C. de Vroedt and D. E. Boekee, Bounds and constructions for binary codes of length less than 24 and asymmetric distance less than 6, IEEE Trans. Inform. Theory, 34 (1988), 1321-1332.

LINKS

Table of n, a(n) for n=1..13.

CROSSREFS

Sequence in context: A326115 A239485 A237756 * A010578 A328583 A240674

Adjacent sequences:  A010331 A010332 A010333 * A010335 A010336 A010337

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

There is a typo at the n=6 term in the printed version of the paper.

STATUS

approved

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Last modified October 22 16:15 EDT 2021. Contains 348174 sequences. (Running on oeis4.)