1,1
Column 5 of A220308
Table of n, a(n) for n=1..7.
Some solutions for n=3
..0..1..1..0..1....1..0..0..1..1....1..1..1..0..1....0..1..1..1..1
..1..1..0..1..1....0..0..1..1..1....1..0..0..0..1....1..1..1..0..0
..0..0..0..1..0....0..1..1..1..1....0..1..0..0..1....1..0..1..1..0
Sequence in context: A226100 A041267 A041264 * A223011 A245915 A109867
Adjacent sequences: A220304 A220305 A220306 * A220308 A220309 A220310
nonn
R. H. Hardin Dec 10 2012
approved