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A054536 Maximal size of binary code of length n and asymmetric distance 4. +0
2
1, 1, 1, 2, 2, 4, 2, 4, 4, 6, 8, 12, 18 (list; graph; listen)
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.

CROSSREFS

Cf. A010101, A010238, A010336.

Sequence in context: A033097 A036845 A094269 this_sequence A001316 A096865 A116466

Adjacent sequences: A054533 A054534 A054535 this_sequence A054537 A054538 A054539

KEYWORD

nonn,nice,hard

AUTHOR

njas, Apr 10 2000

page 1

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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