OFFSET
1,2
COMMENTS
Column 3 of A281540.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) -6*a(n-2) +8*a(n-3) -31*a(n-4) +9*a(n-5) +6*a(n-6) +36*a(n-7) +87*a(n-8) -5*a(n-9) +106*a(n-10) -12*a(n-11) -13*a(n-12) +11*a(n-13) -102*a(n-14) +60*a(n-15) -42*a(n-16) -36*a(n-17) +68*a(n-18) -28*a(n-19) +16*a(n-21) -8*a(n-22) for n>30
EXAMPLE
Some solutions for n=4
..0..0..1. .0..0..1. .0..0..1. .0..1..0. .0..1..2. .0..1..2. .0..0..1
..1..2..1. .1..1..0. .1..2..0. .2..0..2. .2..0..2. .2..0..0. .2..1..2
..1..0..2. .0..2..2. .0..2..1. .1..1..1. .0..1..1. .0..2..1. .0..0..0
..1..2..0. .0..1..0. .1..2..1. .2..2..0. .1..2..0. .1..2..0. .1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 23 2017
STATUS
approved