OFFSET
1,2
COMMENTS
Column 1 of A258631.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=8
..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2
..1....2....1....2....1....1....1....2....1....2....1....1....2....2....1....2
..2....2....2....1....1....2....1....1....1....1....1....2....2....2....2....2
..1....1....1....2....1....2....1....1....2....1....1....2....1....2....1....2
..1....1....2....1....2....2....2....2....2....1....1....1....2....1....1....2
..1....2....2....1....1....1....2....1....2....2....2....1....1....1....2....2
..2....2....2....1....1....2....1....1....2....1....2....1....2....2....1....2
..2....2....2....2....1....2....2....2....2....2....2....2....2....2....2....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 06 2015
STATUS
approved