OFFSET
1,1
COMMENTS
Column 4 of A237488
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..179
EXAMPLE
Some solutions for n=1
..2..1..2..3..3....3..3..2..2..2....1..3..0..3..0....2..1..0..3..1
..1..2..3..1..2....1..0..1..3..1....0..1..1..3..1....1..3..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved