1,2
Row 2 of A297720.
R. H. Hardin, Table of n, a(n) for n = 1..210
Empirical: a(n) = 4*a(n-1) -3*a(n-2) +3*a(n-3) -2*a(n-4) -24*a(n-5) +24*a(n-6)
Some solutions for n=7
..1..1..0..1..1..0..0. .0..0..1..0..1..1..1. .0..1..0..1..1..0..0
..1..1..0..0..0..1..1. .0..0..1..1..1..0..1. .1..0..0..1..0..0..0
Cf. A297720.
Sequence in context: A007584 A218329 A009924 * A019257 A288782 A020877
Adjacent sequences: A297718 A297719 A297720 * A297722 A297723 A297724
nonn
R. H. Hardin, Jan 04 2018
approved