OFFSET
1,2
COMMENTS
Row 4 of A219410
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 16*a(n-1) -65*a(n-2) +488*a(n-3) -1151*a(n-4) +5482*a(n-5) -7699*a(n-6) +23952*a(n-7) -11275*a(n-8) +4326*a(n-9) +78090*a(n-10) -207624*a(n-11) -138747*a(n-12) +498504*a(n-13) +170692*a(n-14) -650696*a(n-15) -185632*a(n-16) +542208*a(n-17) +117248*a(n-18) -278528*a(n-19) -32768*a(n-20) +65536*a(n-21)
EXAMPLE
Some solutions for n=3
..0..0..1....0..0..0....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1
..0..1..1....1..0..1....0..1..1....0..0..1....0..0..0....0..0..0....1..1..0
..0..0..0....0..1..1....1..1..0....1..1..0....1..0..0....1..0..0....0..0..1
..1..0..1....0..0..0....1..0..1....1..0..1....1..0..0....0..0..0....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 19 2012
STATUS
approved