OFFSET
1,1
COMMENTS
Column 2 of A254539
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..4....1....4....4....4....4....4....4....1....1....1....1....4....4....4....1
..2....3....4....4....2....4....4....2....3....3....3....3....2....2....4....3
..3....4....1....4....2....4....2....4....4....2....2....4....2....2....1....2
..3....1....3....3....2....2....4....4....4....4....3....2....4....1....1....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2015
STATUS
approved