A275503 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,-1) and new values introduced in order 0..2.

365, 69984, 50000, 73856, 75024, 346528, 1643372, 7886280, 37846556, 182923008, 884628720, 4276847052, 20741192940, 100647222904, 488252256740, 2372706557348, 11527428408920, 56008813182076, 272332971514256

Offset: 1

Author

R. H. Hardin, Jul 30 2016

Keywords

• nonn

Comments

Column 7 of A275504.

Examples

			Some solutions for n=4
..0..0..1..2..1..0..1. .0..0..1..2..0..1..2. .0..0..0..1..1..2..2
..2..1..1..2..0..0..2. .0..1..1..2..0..1..2. .1..2..1..1..2..0..0
..2..1..2..0..0..2..2. .1..1..2..0..1..2..0. .1..2..1..2..2..0..1
..1..0..0..0..1..2..1. .1..2..0..0..1..2..0. .2..0..0..2..0..1..2
		

Links

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

Crossrefs

Cf. A275504.