OFFSET
1,1
COMMENTS
Column 4 of A274895.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +8*a(n-2) -28*a(n-4) -9*a(n-5) +55*a(n-6) +16*a(n-7) -70*a(n-8) -9*a(n-9) +56*a(n-10) -28*a(n-12) +a(n-13) +8*a(n-14) -a(n-16) for n>18
EXAMPLE
Some solutions for n=4
..0..1..2..0. .0..1..0..1. .0..1..0..2. .0..1..2..1. .0..1..2..0
..1..2..0..1. .2..1..2..1. .2..1..2..1. .1..2..0..1. .1..2..0..1
..2..0..1..2. .1..0..2..0. .1..0..2..0. .2..0..1..2. .2..0..1..2
..0..1..2..0. .1..2..1..0. .1..0..1..0. .0..1..2..0. .2..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 10 2016
STATUS
approved