OFFSET
1,1
COMMENTS
Column 5 of A223449
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 906*a(n-2) -242296*a(n-4) +26234128*a(n-6) -1334520192*a(n-8) +35594966912*a(n-10) -536458306048*a(n-12) +4806221908992*a(n-14) -26453346390016*a(n-16) +90451908067328*a(n-18) -189810835587072*a(n-20) +235660908953600*a(n-22) -163229455089664*a(n-24) +58818801172480*a(n-26) -9781116928000*a(n-28) +542373838848*a(n-30) -2415919104*a(n-32)
EXAMPLE
Some solutions for n=3
..4..8..4..1..0....0..1..4..1..0....2.10.14.10.14....7..4..8..4..7
..8..4..8..4..1....1..0..1..4..1....9..2.10..2.10....4..7..4..8..4
..4..7..4..1..0....0..2..0..1..4...11..9..2.10.13....7..4..7..4..8
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved