OFFSET
1,1
COMMENTS
Column 3 of A231441
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +12*a(n-2) -72*a(n-3) -81*a(n-4) +451*a(n-5) +368*a(n-6) -1550*a(n-7) -591*a(n-8) +2319*a(n-9) -679*a(n-10) -285*a(n-11) +4312*a(n-12) -2776*a(n-13) -9014*a(n-14) +6322*a(n-15) +7616*a(n-16) -11742*a(n-17) +4058*a(n-18) +8508*a(n-19) -8690*a(n-20) -710*a(n-21) +2637*a(n-22) -237*a(n-23) -180*a(n-24)
EXAMPLE
Some solutions for n=6
..0..0..1..1..1....0..0..1..1..1....0..0..0..0..0....0..0..0..1..1
..0..0..1..1..1....0..0..1..1..1....0..0..0..0..0....0..0..0..1..1
..0..0..0..1..1....0..0..0..1..1....1..1..0..0..0....0..0..1..1..1
..2..2..0..0..0....0..0..0..0..0....1..1..1..1..1....1..1..1..2..2
..2..2..2..0..0....0..0..0..0..0....1..1..1..1..1....1..1..2..2..2
..2..2..2..3..3....1..1..1..1..1....2..2..1..1..1....2..2..2..3..3
..2..2..3..3..3....1..1..1..1..1....2..2..2..2..2....2..2..3..3..3
..2..2..3..3..3....1..1..1..1..1....2..2..2..2..2....2..2..3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 09 2013
STATUS
approved