1,2

Row 5 of A220328

Table of n, a(n) for n=1..7.

Some solutions for n=3

..0..0..0....0..0..1....0..0..0....0..1..0....0..1..0....0..1..1....0..0..0

..1..1..0....1..1..0....0..1..0....1..1..0....1..0..1....0..0..0....0..1..0

..0..0..0....0..0..0....0..1..1....1..0..1....1..0..1....0..1..0....0..1..0

..0..1..0....1..1..1....0..1..0....1..0..1....1..0..1....0..1..1....0..1..1

..0..0..0....0..1..0....0..1..0....0..1..0....0..0..0....1..0..0....0..1..0

Sequence in context: A230464 A200891 A240386 * A162675 A221293 A306194

Adjacent sequences: A220329 A220330 A220331 * A220333 A220334 A220335

nonn

R. H. Hardin Dec 10 2012

approved