A231259 Number of (n+1)X(4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.

7, 83, 1253, 19503, 302121, 4670875, 72212345, 1116538567, 17264116873, 266940042371, 4127456101305, 63819175744751, 986779131942921, 15257688013347083, 235916058283574201, 3647760162012484183

Offset: 1

Author

R. H. Hardin, Nov 06 2013

Keywords

• nonn

Comments

Column 4 of A231263

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 31*a(n-1) -364*a(n-2) +2570*a(n-3) -12609*a(n-4) +44731*a(n-5) -117554*a(n-6) +227260*a(n-7) -319008*a(n-8) +314816*a(n-9) -208992*a(n-10) +83456*a(n-11) -14336*a(n-12)