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
Dragomir Z. Dokovic, Equivalence classes and representatives of Golay sequences, Discrete Math. 189 (1998), no. 1-3, 79-93. MR1637705 (99j:94031).
CROSSREFS
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, Mar 02 2012
STATUS
approved