OFFSET
1,1
COMMENTS
Column 4 of A281139.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +a(n-2) +a(n-4) -19*a(n-6) -8*a(n-7) +4*a(n-8) +2*a(n-9) +5*a(n-10) +44*a(n-11) +14*a(n-12) -20*a(n-13) +3*a(n-14) +20*a(n-15) -40*a(n-16) -36*a(n-17) +16*a(n-18) +12*a(n-19) -16*a(n-20) +16*a(n-22) -4*a(n-24) for n>33
EXAMPLE
Some solutions for n=4
..0..1..2..0. .0..1..0..0. .0..1..0..0. .0..1..1..2. .0..0..1..0
..2..0..2..0. .2..1..2..1. .2..2..1..2. .0..2..0..0. .1..2..1..2
..2..1..1..1. .0..2..0..0. .0..0..1..0. .1..1..2..2. .0..0..1..0
..0..0..2..2. .0..1..1..2. .1..2..2..0. .0..2..0..0. .1..2..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2017
STATUS
approved