OFFSET
1,2
COMMENTS
Diagonal of A229479.
EXAMPLE
Some solutions for n=4:
0 1 0 2 0 1 2 0 0 1 2 2 0 1 2 0 0 1 0 2
2 3 1 3 2 3 1 2 3 0 3 1 2 3 1 2 2 0 1 0
1 3 0 1 1 0 3 0 1 2 0 2 1 2 0 1 3 2 3 1
0 2 3 0 2 1 0 2 0 1 3 0 0 1 0 2 0 1 0 3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 24 2013
STATUS
approved