OFFSET
1,1
COMMENTS
Diagonal of A201503
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..39
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0
..0..0..0..1....0..0..1..1....0..0..1..1....0..0..0..1....0..0..0..1
..0..1..1..1....0..1..1..1....0..0..1..1....0..0..1..1....0..1..1..1
..0..1..1..1....0..1..1..1....0..1..1..1....1..1..1..1....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 02 2011
STATUS
approved