1,1

Ron Hardin, Table of n, a(n) for n = 1..26

Some solutions for n=4

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

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

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

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

Sequence in context: A268120 A324263 A049650 * A139007 A015486 A191951

Adjacent sequences: A191503 A191504 A191505 * A191507 A191508 A191509

nonn

R. H. Hardin Jun 04 2011

approved