OFFSET
1,2
COMMENTS
See A185256.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..2000
P. Erdos, V. Lev, G. Rauzy, C. Sandor, and A. Sarkozy, Greedy algorithm, arithmetic progressions, subset sums and divisibility, Discrete Mathematics 200 (1999), pp. 119-135. See Table 4.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 19 2011
STATUS
approved