OFFSET
1,3
COMMENTS
Column 3 of A282230.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 44*a(n-1) -320*a(n-2) -3556*a(n-3) -10716*a(n-4) +50424*a(n-5) +405964*a(n-6) +817056*a(n-7) -2493088*a(n-8) -15933280*a(n-9) -25854848*a(n-10) +44982016*a(n-11) +245905088*a(n-12) +342215168*a(n-13) -181768192*a(n-14) -1149643776*a(n-15) -1772187648*a(n-16) -1392648192*a(n-17) -622891008*a(n-18) -101744640*a(n-19) -5308416*a(n-20) for n>21
EXAMPLE
Some solutions for n=4
..0..1..0. .0..1..0. .0..0..1. .0..0..0. .0..1..0. .0..0..1. .0..1..0
..0..0..2. .0..2..0. .2..2..0. .1..0..2. .2..1..1. .2..0..2. .2..0..0
..0..2..0. .0..0..1. .2..2..2. .0..0..0. .2..2..2. .2..2..2. .2..0..1
..2..0..1. .1..0..0. .2..0..0. .1..1..0. .1..2..2. .0..1..2. .0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 09 2017
STATUS
approved