OFFSET
1,2
COMMENTS
Row 2 of A220386
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +4*a(n-3) +7*a(n-4) -7*a(n-6) -19*a(n-7) -21*a(n-8) -33*a(n-9) -14*a(n-10) +a(n-11) +6*a(n-12) +45*a(n-13) +27*a(n-14) +72*a(n-15) -a(n-16) +6*a(n-17) -32*a(n-18) -16*a(n-19) -4*a(n-20) +4*a(n-22)
EXAMPLE
Some solutions for n=3
..1..0..0....1..1..1....0..0..0....0..0..1....0..0..1....0..0..1....1..1..0
..0..0..1....1..0..0....1..1..1....0..0..0....0..1..1....1..1..1....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 13 2012
STATUS
approved