A239818 Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

312, 118253, 36627126, 12059066460, 3842974545029, 1246285848518417, 399696014140196630, 129035213192353255123, 41500218830682985410810, 13375093569069190733883673, 4305661324527210642658505946

Offset: 1

Author

R. H. Hardin, Mar 27 2014

Keywords

• nonn

Comments

Column 7 of A239819

Examples

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

Links

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