OFFSET
1,1
COMMENTS
Column 2 of A231441
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) -24*a(n-3) -4*a(n-4) +70*a(n-5) +7*a(n-6) -29*a(n-7) -24*a(n-8) -202*a(n-9) +21*a(n-10) +269*a(n-11) +185*a(n-12) -177*a(n-13) -123*a(n-14) +5*a(n-15) -116*a(n-16) +144*a(n-17) +30*a(n-18) -36*a(n-19)
EXAMPLE
Some solutions for n=6
..0..0..0..0....0..0..1..1....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..1..1....0..0..0..0....0..0..0..0....0..0..0..0
..1..1..0..0....1..1..0..0....0..0..1..1....1..1..1..1....0..0..0..0
..1..1..1..1....1..1..0..0....0..1..1..1....1..1..1..1....0..0..0..0
..1..1..1..1....0..0..1..1....0..1..1..1....2..2..2..2....0..0..1..1
..1..1..1..1....0..0..1..1....0..0..1..1....2..2..2..2....1..1..1..1
..1..1..1..1....0..0..1..1....0..0..1..1....3..3..3..3....1..1..1..1
..1..1..1..1....0..0..1..1....0..0..1..1....3..3..3..3....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 09 2013
STATUS
approved