OFFSET
1,1
COMMENTS
Every 0 is next to 0 2's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 3's, every 4 is next to 4 4's
Column 4 of A196436
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 6*a(n-2) +26*a(n-3) +57*a(n-4) +71*a(n-5) +49*a(n-6) +43*a(n-7) +35*a(n-8) +22*a(n-9) +25*a(n-10) +11*a(n-11) -5*a(n-12) -a(n-14)
EXAMPLE
Some solutions for n=5
..0..0..1..1....1..1..0..0....0..0..0..0....0..0..0..1....0..0..0..0
..1..1..0..0....0..0..0..0....1..1..0..0....0..1..0..1....0..0..0..1
..0..0..0..0....1..1..0..0....0..0..1..1....0..1..0..0....0..0..0..1
..1..1..0..1....0..0..1..0....0..0..0..0....0..0..1..1....1..1..0..0
..0..0..0..1....0..0..1..0....0..0..1..1....1..1..0..0....0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 02 2011
STATUS
approved