1,2
Diagonal of A219403
Table of n, a(n) for n=1..10.
Some solutions for n=3
..1..1..1....1..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1
..0..0..0....0..0..1....0..0..0....1..0..0....1..1..1....1..1..1....0..0..1
Sequence in context: A326362 A287222 A216598 * A275912 A337870 A181914
Adjacent sequences: A219394 A219395 A219396 * A219398 A219399 A219400
nonn
R. H. Hardin Nov 19 2012
approved