OFFSET
1,3
COMMENTS
Column 4 of A184848
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..43
EXAMPLE
All solutions for n=5
..0....4....0
..4....0....0
..4....0....0
..0....4....0
..0....0....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 23 2011
STATUS
approved