OFFSET
1,1
EXAMPLE
Some solutions for n=4:
2 1 2 2 3 0 3 3 0 3 0 3 3 3 1 2 3 3 0 2
2 3 2 0 3 2 3 1 0 1 0 1 3 1 1 1 0 2 1 1
1 0 1 1 2 1 0 0 1 0 2 1 1 1 3 1 2 2 3 1
2 3 2 0 3 2 3 1 0 1 0 1 3 1 1 0 3 1 0 0
2 1 2 2 3 1 0 0 1 0 1 0 0 0 2 0 1 1 2 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2013
STATUS
approved