OFFSET
1,1
EXAMPLE
Some solutions for n=2:
0 2 3 2 0 0 1 3 2 2 2 2 3 3 2 2 3 2 3 2 1
0 1 3 1 0 1 0 3 3 2 3 2 2 1 1 1 3 1 3 3 1
0 0 3 0 0 0 1 3 2 3 3 1 3 1 2 0 3 0 3 2 1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 23 2013
STATUS
approved