1,1
Column 5 of A238026
Table of n, a(n) for n=1..9.
Some solutions for n=1
..1..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..1..0..0
..0..0..1..1..1..1..0....1..1..0..1..1..0..1....1..1..0..1..0..1..1
..0..0..0..0..0..0..0....0..0..0..0..0..1..0....0..0..1..0..0..0..0
Sequence in context: A251436 A035771 A107567 * A132214 A133538 A075668
Adjacent sequences: A238022 A238023 A238024 * A238026 A238027 A238028
nonn
R. H. Hardin, Feb 17 2014
approved