OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 128*a(n-1) - 2816*a(n-2) + 16384*a(n-3).
Empirical g.f.: 2*x*(5 - 240*x + 2048*x^2) / ((1 - 16*x)*(1 - 112*x + 1024*x^2)). - Colin Barker, Oct 10 2018
EXAMPLE
Some solutions for n=3:
..0..1..5..2....0..1..2..1....0..1..0..4....0..1..2..0....0..1..5..2
..3..1..5..1....2..4..5..1....0..1..5..2....0..1..3..0....0..1..5..3
..5..4..5..4....3..1..3..4....5..2..0..4....5..4..3..4....2..1..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 05 2013
STATUS
approved