OFFSET
1,1
COMMENTS
Column 4 of A252961
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) +5*a(n-3) -40*a(n-4) +57*a(n-5) +67*a(n-6) -110*a(n-7) +15*a(n-8) -415*a(n-9) +1040*a(n-10) -861*a(n-11) +314*a(n-12) -175*a(n-13) +147*a(n-14) -42*a(n-15) for n>17
EXAMPLE
Some solutions for n=2
..0..1..0..0..1..0....0..1..1..2..2..3....0..0..1..0..0..2....0..1..1..2..2..0
..1..1..2..1..1..2....4..0..0..1..1..4....2..3..3..0..3..3....2..3..3..1..1..4
..3..1..1..2..1..1....2..3..3..0..0..2....4..4..0..0..1..0....4..0..0..3..3..2
..0..1..0..0..1..0....1..4..4..3..3..0....0..0..2..0..0..1....1..2..2..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2014
STATUS
approved