OFFSET
1,1
COMMENTS
Column 4 of A206889
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 11*a(n-1) -14*a(n-2) -193*a(n-3) +496*a(n-4) +1310*a(n-5) -4382*a(n-6) -4486*a(n-7) +18762*a(n-8) +8132*a(n-9) -44696*a(n-10) -6382*a(n-11) +61529*a(n-12) -2253*a(n-13) -48436*a(n-14) +8149*a(n-15) +20392*a(n-16) -5560*a(n-17) -3842*a(n-18) +1352*a(n-19) +192*a(n-20) -80*a(n-21)
EXAMPLE
Some solutions for n=4
..0..0..0..1....1..0..0..1....1..0..1..1....1..0..0..1....0..1..1..0
..1..0..1..1....0..1..1..0....1..1..0..0....1..0..0..0....0..0..1..1
..0..0..1..1....1..1..0..1....1..1..1..1....1..1..1..1....0..1..1..1
..1..1..0..0....1..0..1..1....1..0..1..1....1..0..1..1....1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 13 2012
STATUS
approved