OFFSET
1,1
COMMENTS
Column 1 of A251885
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..1..1..3....1..0..1....0..4..1....1..4..2....2..0..0....2..4..1....3..4..0
..2..1..0....1..0..1....4..0..1....1..3..1....0..1..4....3..3..1....1..3..3
..0..1..4....3..2..0....3..3..1....3..4..0....3..1..3....0..0..3....3..4..0
..3..1..1....1..3..1....4..0..3....3..0..4....4..1..0....0..0..3....1..0..4
..4..3..0....3..0..4....0..4..3....1..1..1....0..3..2....3..3..1....1..3..3
..0..3..4....3..4..0....1..3..1....1..1..0....1..1..3....4..0..3....1..4..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2014
STATUS
approved