OFFSET
1,1
COMMENTS
Column 5 of A188874.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 24*a(n-1) -67*a(n-2) -48*a(n-3) -540*a(n-4) +2272*a(n-5) +1536*a(n-6) -6944*a(n-7) +2864*a(n-8) +1600*a(n-9) -768*a(n-10) for n>12.
EXAMPLE
Some solutions for 3 X 5
..1..0..1..1..0....0..1..0..1..1....1..0..1..1..1....0..1..0..0..1
..0..1..1..0..1....1..1..1..1..0....0..0..1..0..1....0..1..1..1..1
..1..0..1..1..0....1..1..0..1..0....1..1..1..0..0....1..1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2011
STATUS
approved