OFFSET
1,1
COMMENTS
Column 4 of A259524
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 25*a(n-1) -152*a(n-2) -109*a(n-3) +3368*a(n-4) -6811*a(n-5) -12971*a(n-6) +49951*a(n-7) -9491*a(n-8) -92048*a(n-9) +49214*a(n-10) +74086*a(n-11) -38089*a(n-12) -32429*a(n-13) +8846*a(n-14) +6910*a(n-15) -139*a(n-16) -458*a(n-17) -58*a(n-18) -2*a(n-19)
EXAMPLE
Some solutions for n=3
..1..0..0..1..1....0..0..0..0..0....1..0..0..0..1....0..0..0..0..1
..0..0..1..0..0....1..0..0..0..1....0..0..1..0..0....0..1..1..1..0
..0..0..0..0..0....0..1..1..0..0....0..0..1..0..0....1..0..0..0..0
..1..1..1..0..1....1..0..0..0..1....1..0..1..0..0....0..1..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 29 2015
STATUS
approved