OFFSET
1,1
COMMENTS
Column 5 of A224024
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 56*a(n-1) -1098*a(n-2) +10776*a(n-3) -59038*a(n-4) +197135*a(n-5) -527776*a(n-6) +1780117*a(n-7) -5020078*a(n-8) +3603978*a(n-9) -19091082*a(n-10) +61460622*a(n-11) +49090018*a(n-12) +274177128*a(n-13) +105163104*a(n-14) +354022404*a(n-15) +28705280*a(n-16) +147891456*a(n-17) -1275168*a(n-18) +15980544*a(n-19)
EXAMPLE
Some solutions for n=3
..0..2..3..3..3....1..2..2..2..2....2..2..3..3..3....1..2..2..2..3
..0..2..2..3..3....0..0..1..1..2....0..0..0..0..3....0..0..1..2..2
..0..0..1..2..2....0..0..1..3..3....0..0..0..0..2....0..0..1..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 30 2013
STATUS
approved