1,2
Diagonal of A317572.
Table of n, a(n) for n=1..9.
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..1..1..0..0..0. .0..0..0..1..0. .1..0..1..0..0. .0..1..0..0..0
..0..0..0..0..0. .0..1..1..0..0. .0..1..1..0..1. .0..0..0..0..0
..1..1..0..1..0. .1..0..0..0..0. .0..1..0..1..0. .0..1..1..0..0
..0..0..0..1..0. .0..0..1..1..0. .1..1..1..1..0. .1..0..0..0..0
Cf. A317572.
Sequence in context: A096486 A303463 A300805 * A301444 A333036 A247729
Adjacent sequences: A317563 A317564 A317565 * A317567 A317568 A317569
nonn
R. H. Hardin, Jul 31 2018
approved