OFFSET
1,1
COMMENTS
Row 4 of A233239
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 261*a(n-1) -3894*a(n-2) -228438*a(n-3) +2689194*a(n-4) +57510040*a(n-5) -258059784*a(n-6) -1989997012*a(n-7) +8744106144*a(n-8) +8456810274*a(n-9) -90329150058*a(n-10) +156901744724*a(n-11) -57108648251*a(n-12) -126001313693*a(n-13) +153480763210*a(n-14) -36878799916*a(n-15) -35471311024*a(n-16) +25150473568*a(n-17) -4487086464*a(n-18) -393804288*a(n-19) +117669888*a(n-20) +6635520*a(n-21) for n>22
EXAMPLE
Some solutions for n=2
..0..1....0..1....0..1....0..1....0..1....0..0....0..1....0..1....0..1....0..1
..2..2....2..2....2..2....1..2....2..1....1..2....5..4....2..0....2..0....2..4
..1..2....4..4....0..1....2..1....0..1....5..5....2..4....0..4....4..5....2..4
..1..2....2..2....3..4....1..2....5..3....5..5....4..0....0..4....3..5....2..5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 06 2013
STATUS
approved