1,2
Diagonal of A219142
Table of n, a(n) for n=1..8.
Some solutions for n=3
..1..0..1....1..0..1....0..0..0....0..0..1....0..0..1....0..0..0....1..0..0
..0..0..0....0..0..1....0..0..0....0..0..1....0..0..0....0..1..0....1..0..0
..0..0..0....1..0..0....1..0..0....0..0..1....1..0..0....1..1..1....0..0..1
Sequence in context: A179498 A177556 A219435 * A208308 A353411 A053771
Adjacent sequences: A219132 A219133 A219134 * A219136 A219137 A219138
nonn
R. H. Hardin Nov 12 2012
approved