OFFSET

1,1

COMMENTS

Column 5 of A237637

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 4*a(n-4) for n>13

EXAMPLE

Some solutions for n=5

..0..0..2..0..0..0....2..1..0..0..0..2....0..0..0..0..2..2....0..0..0..2..0..0

..1..2..1..0..1..2....2..1..0..1..2..0....0..2..1..0..1..2....0..1..2..1..0..1

..2..0..0..0..2..1....0..0..0..2..1..0....0..1..2..0..0..0....1..2..0..0..0..2

..1..0..1..2..0..0....0..1..2..0..0..0....0..0..0..2..1..0....2..1..0..1..2..1

..0..0..2..0..1..0....1..2..1..0..1..2....2..1..0..1..2..1....0..0..0..2..0..0

..1..2..1..0..0..2....2..0..0..0..2..2....2..2..0..0..0..2....0..1..2..1..0..2

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 10 2014

STATUS

approved