OFFSET
1,1
COMMENTS
Column 3 of A231302
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +17*a(n-2) -23*a(n-3) -78*a(n-4) -11*a(n-5) +143*a(n-6) +431*a(n-7) -362*a(n-8) -763*a(n-9) +176*a(n-10) -60*a(n-11) +336*a(n-12) +448*a(n-13) -256*a(n-14) for n>16
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..0
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..1....1..1..0..0
..0..1..1..1....0..0..1..1....0..1..1..1....0..0..1..1....1..1..0..0
..1..1..2..2....1..1..1..0....1..1..1..1....0..1..1..1....1..1..0..0
..1..2..2..2....1..1..0..0....1..1..1..1....1..1..1..1....1..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 07 2013
STATUS
approved