OFFSET
1,2
COMMENTS
Row 5 of A213118
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: 3*n*(77*n-237)*a(n) = 2*(924*n^2-3545*n+2311)*a(n-1) - 8*(462*n^2-2131*n+2347)*a(n-2) - 128*(2*n-9)*a(n-3). - Vaclav Kotesovec, Oct 19 2012
EXAMPLE
Some solutions for n=3
..0....0....0....0....0....0....0....0....1....1....1....0....0....0....1....1
..1....0....1....0....0....0....1....0....0....0....0....0....0....1....0....0
..0....0....0....0....0....0....0....1....0....1....0....0....1....0....1....0
..0....0....0....0....0....0....0....0....1....0....0....1....0....0....0....0
..1....0....0....0....1....0....1....0....0....0....0....0....0....0....0....0
..0....1....0....0....1....0....0....1....0....0....0....0....0....0....0....0
..0....0....0....1....0....1....0....0....0....1....0....0....0....1....0....0
..1....0....0....1....0....0....0....0....0....0....1....1....1....0....1....1
..0....0....1....0....0....1....0....1....0....1....0....0....0....0....0....0
..0....1....0....0....0....0....1....0....1....0....1....0....1....1....0....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 05 2012
STATUS
approved