OFFSET
1,1
COMMENTS
Row 3 of A207442
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) -5*a(n-2) +16*a(n-3) -35*a(n-4) +19*a(n-5) -48*a(n-6) +80*a(n-7) +12*a(n-8) +52*a(n-9) -92*a(n-10) -54*a(n-11) -52*a(n-12) +76*a(n-13) +43*a(n-14) +32*a(n-15) -27*a(n-16) -16*a(n-17) -11*a(n-18) +5*a(n-19) +2*a(n-21)
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..1..1..0....1..0..0..0....0..1..1..1....1..1..1..1
..0..1..1..0....0..0..0..0....1..0..1..1....1..0..0..0....0..0..0..0
..0..1..1..0....0..1..1..0....0..0..0..0....0..1..1..1....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 17 2012
STATUS
approved