OFFSET
1,1
COMMENTS
See A194285.
EXAMPLE
First eight rows:
2
2...2
2...3...3
4...5...3...4
6...7...7...6...6
9...11..12..9...12..11
18..18..18..19..19..18..18
31..33..32..33..30..33..31..33
MATHEMATICA
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Aug 21 2011
STATUS
approved