login
A239538
Number of (4+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order
2
13, 68, 1014, 11108, 131988, 1533792, 17931608, 209295248, 2443954640, 28534764096, 333172950560, 3890104752256, 45420709489664, 530330059963392, 6192109859155200, 72298791884174336, 844157402919585408
OFFSET
1,1
COMMENTS
Row 4 of A239537
LINKS
FORMULA
Empirical: a(n) = 8*a(n-1) +46*a(n-2) -22*a(n-3) -166*a(n-4) +28*a(n-5) +68*a(n-6) +208*a(n-7) -160*a(n-8) -48*a(n-9) +32*a(n-10)
EXAMPLE
Some solutions for n=4
..0..1..0..2..1....0..1..0..2..1....0..1..0..0..1....0..1..0..1..0
..0..1..0..2..1....0..1..0..2..1....0..1..0..0..1....0..1..0..1..0
..1..0..0..1..2....0..1..2..2..1....0..1..0..0..1....0..2..0..1..2
..1..0..2..1..2....0..2..2..1..0....2..1..2..2..1....1..2..2..0..2
..1..0..2..1..2....0..2..2..1..0....2..1..2..2..1....1..2..2..0..2
CROSSREFS
Sequence in context: A258618 A093119 A362102 * A156794 A137188 A055338
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 21 2014
STATUS
approved