OFFSET
1,2
COMMENTS
Column 4 of A280902.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 87*a(n-1) -2391*a(n-2) +16652*a(n-3) +109659*a(n-4) +121533*a(n-5) -306694*a(n-6) -726651*a(n-7) -13365*a(n-8) +1128492*a(n-9) +688905*a(n-10) -531441*a(n-11) -531441*a(n-12) for n>14
EXAMPLE
Some solutions for n=3
..0..1..1..1. .0..1..0..0. .0..1..0..0. .0..1..1..2. .0..0..0..1
..2..0..1..2. .0..2..2..2. .2..2..0..1. .2..1..0..2. .2..0..2..1
..0..2..1..1. .0..1..1..1. .1..0..2..0. .1..2..1..2. .2..1..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2017
STATUS
approved