A239411 Number of 7 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.

368, 113774, 32507376, 9402398952, 2671846338458, 765206237815409, 217822754771248124, 62224253930396430225, 17732860047914475927901, 5061141668045083629968143, 1443095146623473513048203207

Offset: 1

Author

R. H. Hardin, Mar 17 2014

Keywords

• nonn

Comments

Row 7 of A239405.

Examples

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

Links

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

Crossrefs

Cf. A239405.