OFFSET
1,2
COMMENTS
Row 3 of A219142
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..40
FORMULA
Empirical: a(n) = 4*a(n-1) -8*a(n-3) +17*a(n-4) +17*a(n-5) -29*a(n-6) -13*a(n-7) +9*a(n-8) -31*a(n-9) -26*a(n-10) +30*a(n-11) -3*a(n-12) +6*a(n-13) +17*a(n-14) -3*a(n-15) +3*a(n-16) -2*a(n-17) for n>18
EXAMPLE
Some solutions for n=3
..1..0..1....1..0..1....0..0..1....0..0..1....1..0..0....0..0..0....0..0..0
..0..0..1....0..0..1....0..0..1....1..0..1....1..0..0....1..0..1....0..0..1
..1..0..1....0..0..1....0..0..1....1..0..0....0..0..1....0..0..1....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 12 2012
STATUS
approved