OFFSET
0,6
LINKS
EXAMPLE
{A005132(n)} = {0, 1, 3, 6, ...}.
0 <= 2, 1 <= 2 and 3 > 2. So a(2) = 1.
0 <= 3, 1 <= 3, 3 <= 3 and 6 > 3 So a(3) = 1.
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Seiichi Manyama, May 02 2020
STATUS
approved