A219123 Number of nX3 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 nX3 array.

9, 87, 787, 6981, 63183, 571149, 5167013, 46755215, 423105613, 3828940359, 34650738731, 313579561365, 2837811156791, 25681442217553, 232410308770677, 2103252374190595, 19033883010223093, 172251656124086271

Offset: 1

Author

R. H. Hardin Nov 12 2012

Keywords

• nonn

Comments

Column 3 of A219128

Examples

			Some solutions for n=3
..1..0..0....2..1..1....2..0..0....0..0..1....1..1..2....1..0..0....1..1..1
..2..0..0....2..1..2....0..0..1....2..0..2....1..0..1....2..0..0....1..1..1
..1..0..1....2..1..1....0..0..2....0..0..1....0..0..2....1..0..2....2..2..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..36

Formula

Empirical: a(n) = 10*a(n-1) -5*a(n-2) -24*a(n-3) -70*a(n-4) -58*a(n-5) -81*a(n-6) -200*a(n-7) +269*a(n-8) +1056*a(n-9) +1650*a(n-10) +1036*a(n-11) +200*a(n-12)