A239404 Number of nX7 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it, modulo 4.

128, 44399, 15591122, 5277728354, 1820591502437, 630657074443394, 217822754771248124, 75263099558825967756, 26030827849718972763027, 9004105241933423695032678, 3114444338059091764373199789

Offset: 1

Author

R. H. Hardin, Mar 17 2014

Keywords

• nonn

Comments

Column 7 of A239405

Examples

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

Links

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