OFFSET
1,1
COMMENTS
Row 3 of A276248.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +3*a(n-2) +8*a(n-3) -10*a(n-4) -21*a(n-5) +17*a(n-7) +12*a(n-8) -17*a(n-9) +2*a(n-10) +3*a(n-11) +3*a(n-12) -a(n-14) for n>15.
EXAMPLE
Some solutions for n=4
..0..1..1..2. .0..1..1..0. .0..0..1..2. .0..1..2..2. .0..1..2..0
..2..2..0..1. .0..0..1..2. .2..2..1..0. .0..1..1..2. .2..0..1..1
..1..2..0..0. .2..2..0..0. .0..2..1..0. .2..2..0..1. .1..2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 25 2016
STATUS
approved