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A057580 Maximal numbers of codewords in mixed code with 2 binary coordinates and n ternary coordinates with Hamming distance 3. 2
1, 2, 4, 9, 22 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Is this sequence equal to A105633? - Paul D. Hanna, Apr 17 2005

LINKS

Table of n, a(n) for n=0..4.

P. R. J. Ostergard, Classification of small binary/ternary one-error-correcting codes (Appendix), Discrete Mathematics 223 (2000), 253-262.

CROSSREFS

Cf. A057574-A057584, A050142.

Sequence in context: A148076 A217976 A156801 * A129875 A055094 A055729

Adjacent sequences:  A057577 A057578 A057579 * A057581 A057582 A057583

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 04 2000

STATUS

approved

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Last modified January 19 20:41 EST 2020. Contains 331066 sequences. (Running on oeis4.)