OFFSET
1,2
COMMENTS
Column 3 of A281129.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) -70*a(n-3) -176*a(n-4) -366*a(n-5) -101*a(n-6) +541*a(n-7) +111*a(n-8) -731*a(n-9) -2114*a(n-10) -1900*a(n-11) +3502*a(n-12) +2900*a(n-13) -4597*a(n-14) -2319*a(n-15) +2436*a(n-16) +220*a(n-17) +76*a(n-18) +1492*a(n-19) +672*a(n-20) +160*a(n-21) +192*a(n-22) +64*a(n-23) for n>30
EXAMPLE
Some solutions for n=4
..0..1..2. .0..1..2. .0..1..2. .0..1..2. .0..1..2. .0..1..0. .0..1..2
..0..1..0. .2..0..1. .2..1..2. .0..2..1. .0..2..1. .2..0..2. .1..0..0
..2..0..2. .2..2..0. .1..0..1. .1..2..1. .1..1..2. .2..0..1. .0..1..1
..1..1..1. .1..0..1. .0..1..0. .0..0..2. .2..1..2. .1..2..1. .2..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2017
STATUS
approved