A222168 Number of nX7 0..4 arrays with entries increasing mod 5 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.

729, 199497, 60481881, 18838482047, 5923189816253, 1869223526083263, 590771311004409091, 186831129401198761761, 59100748356892786911715, 18697545591371281608525201, 5915566903646796343481287921

Offset: 1

Author

R. H. Hardin Feb 10 2013

Keywords

• nonn

Comments

Column 7 of A222169

Examples

			Some solutions for n=3
..0..0..0..1..1..2..4....0..0..0..1..1..3..3....0..0..0..0..1..1..3
..0..0..0..1..3..4..1....0..0..0..2..3..3..3....0..0..0..2..3..3..0
..0..0..1..3..0..1..1....0..0..1..3..3..4..0....0..1..1..3..3..3..0
		

Links

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