OFFSET
1,1
EXAMPLE
Some solutions for n=4:
1 0 2 0 2 2 0 2 1 2 1 0 1 0 1 2 0 1 0 1
3 1 4 3 4 4 3 4 2 4 3 1 3 1 3 3 2 4 2 4
1 0 2 0 2 3 1 3 0 3 1 0 1 0 1 2 0 1 0 1
3 1 4 3 4 4 3 4 2 4 4 2 4 2 4 3 2 4 2 4
1 0 2 0 2 2 0 2 1 2 1 0 3 0 3 2 0 1 0 3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2014
STATUS
approved