OFFSET
1,1
COMMENTS
Column 2 of A233717
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-1) +56*a(n-2) -565*a(n-3) -766*a(n-4) +15139*a(n-5) -7664*a(n-6) -200684*a(n-7) +302993*a(n-8) +1413766*a(n-9) -3297757*a(n-10) -5115754*a(n-11) +18205660*a(n-12) +6468818*a(n-13) -56612688*a(n-14) +15267568*a(n-15) +100195210*a(n-16) -68399612*a(n-17) -95039845*a(n-18) +102899681*a(n-19) +36863396*a(n-20) -73128319*a(n-21) +5984214*a(n-22) +22126722*a(n-23) -7453432*a(n-24) -1251600*a(n-25) +860624*a(n-26) -95168*a(n-27)
EXAMPLE
Some solutions for n=4
..3..3..3....1..3..3....2..4..3....4..1..4....0..2..2....0..3..4....3..4..4
..2..0..2....0..0..1....1..1..3....4..3..4....0..3..0....1..3..1....3..1..3
..3..3..3....1..3..1....3..0..0....1..1..4....1..1..1....1..0..0....4..4..3
..1..0..2....0..3..4....1..1..3....0..3..3....0..3..0....3..3..1....2..1..3
..3..3..3....1..1..1....3..4..4....0..1..0....2..2..2....1..0..1....2..4..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2013
STATUS
approved