1,2

Row 4 of A220935

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

Some solutions for n=3

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

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

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

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

Sequence in context: A006303 A219440 A219141 * A221292 A231514 A156226

Adjacent sequences: A220935 A220936 A220937 * A220939 A220940 A220941

nonn

R. H. Hardin Dec 25 2012

approved