A185064 Numbers k such that a Golay sequence of length k exists.

1, 2, 4, 8, 10, 16, 20, 26, 32, 40, 52, 64, 80, 100

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