A204702 Number of nX5 0..2 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..2 introduced in row major order.

30, 5400, 362020, 29846373, 2389914827, 192759130113, 15521787839696, 1250634888842984, 100749784360671667, 8116764740949394264, 653904134820543785397, 52680223968250151357189, 4244049256144093743987455

Offset: 1

Author

R. H. Hardin Jan 18 2012

Keywords

• nonn

Comments

Column 5 of A204705

Examples

			Some solutions for n=5
..0..0..1..2..0....0..0..1..2..2....0..0..1..0..0....0..0..1..2..0
..1..2..1..2..1....2..1..2..1..1....1..2..1..0..0....1..1..2..0..2
..2..1..0..0..1....1..2..1..1..2....2..0..0..2..1....2..2..1..2..2
..1..1..2..1..2....1..1..0..2..2....2..1..1..2..1....2..1..0..0..1
..2..2..1..1..0....2..2..0..1..0....0..0..1..0..2....0..1..0..1..0
		

Links

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