1,2
Diagonal of A299753.
Table of n, a(n) for n=1..9.
Some solutions for n=5
..0..1..1..0..0. .0..1..0..0..1. .0..1..0..1..0. .0..0..0..1..0
..1..0..1..0..1. .0..1..1..0..1. .0..0..1..1..1. .1..1..1..1..1
..1..0..1..0..1. .1..0..0..0..0. .1..1..1..1..0. .0..0..1..1..0
..0..0..1..0..1. .0..1..1..1..1. .0..1..1..0..1. .1..0..1..0..1
..0..1..1..0..0. .0..1..0..0..0. .1..1..0..1..0. .0..0..0..1..0
Cf. A299753.
Sequence in context: A182648 A003775 A262737 * A300261 A121785 A305587
Adjacent sequences: A299744 A299745 A299746 * A299748 A299749 A299750
nonn
R. H. Hardin, Feb 18 2018
approved