A239595 Number of nX3 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 or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

10, 15, 31, 82, 177, 458, 1071, 2150, 5209, 11204, 24273, 58130, 123647, 278779, 634283, 1360984, 3103558, 6892041, 15084730, 34250268, 75240998, 167095718, 375589317, 825397281, 1846103269, 4114306092, 9085354958, 20337008173

Offset: 1

Author

R. H. Hardin, Mar 22 2014

Keywords

• nonn

Comments

Column 3 of A239599

Examples

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

Links

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