1,2
Diagonal of A302889.
Table of n, a(n) for n=1..9.
Some solutions for n=5
..0..1..1..0..1. .0..0..0..0..0. .0..0..1..1..1. .0..0..0..1..1
..1..1..0..0..0. .0..0..0..0..0. .1..0..0..1..1. .1..0..0..1..1
..0..0..1..0..0. .0..0..1..1..0. .1..0..0..0..0. .1..0..1..0..1
..0..0..0..1..1. .1..1..1..0..0. .1..0..1..0..0. .0..0..0..1..1
..1..0..0..1..1. .0..1..1..0..0. .0..0..0..0..0. .0..0..0..1..1
Cf. A302889.
Sequence in context: A139119 A244757 A298476 * A053788 A078976 A200911
Adjacent sequences: A302880 A302881 A302882 * A302884 A302885 A302886
nonn
R. H. Hardin, Apr 15 2018
approved