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A185064 Numbers k such that a Golay sequence of length k exists. 11
1, 2, 4, 8, 10, 16, 20, 26, 32, 40, 52, 64, 80, 100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

It is known that the sequence contains all numbers 2^i 10^j 26^m, and that all terms k > 1 are even and not divisible by any prime == 3 (mod 4). But the full characterization of these numbers is an open problem.

LINKS

Table of n, a(n) for n=1..14.

Dragomir Z. Dokovic, Equivalence classes and representatives of Golay sequences, Discrete Math. 189 (1998), no. 1-3, 79-93. MR1637705 (99j:94031).

CROSSREFS

Cf. A208924-A208929.

Sequence in context: A026169 A177931 A060378 * A036975 A287178 A093547

Adjacent sequences: A185061 A185062 A185063 * A185065 A185066 A185067

KEYWORD

nonn,nice,more

AUTHOR

N. J. A. Sloane, Mar 02 2012

STATUS

approved

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Last modified January 30 19:10 EST 2023. Contains 359947 sequences. (Running on oeis4.)