1,1
Column 6 of A232860
Table of n, a(n) for n=1..9.
Some solutions for n=3
..0..0..1..0..0..0..0....1..0..0..0..0..0..0....0..0..0..1..0..0..0
..1..0..0..1..1..0..1....1..0..0..0..1..1..1....0..0..0..0..1..0..0
..0..1..0..0..0..1..1....0..0..0..1..1..1..1....0..0..0..0..0..1..1
..0..0..1..1..1..1..1....0..1..1..1..1..1..1....0..0..1..1..1..1..1
Sequence in context: A254702 A206615 A242092 * A224259 A223915 A224187
Adjacent sequences: A232856 A232857 A232858 * A232860 A232861 A232862
nonn
R. H. Hardin, Dec 01 2013
approved