OFFSET
1,1
COMMENTS
Column 4 of A269194.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 46*a(n-1) -607*a(n-2) +1264*a(n-3) +11029*a(n-4) -27640*a(n-5) -86627*a(n-6) +153412*a(n-7) +308464*a(n-8) -329306*a(n-9) -438615*a(n-10) +260680*a(n-11) +134834*a(n-12) -65824*a(n-13) -9889*a(n-14) +5080*a(n-15) -400*a(n-16) for n>17
EXAMPLE
Some solutions for n=3
..0..0..3..1. .3..3..3..3. .3..3..1..3. .0..0..0..0. .0..1..0..2
..1..1..1..1. .3..1..3..1. .1..3..1..0. .1..0..0..0. .2..0..0..2
..1..0..1..0. .1..3..1..3. .1..3..1..1. .2..0..1..1. .2..2..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 20 2016
STATUS
approved