A241394 Number of n X 4 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 zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

6, 23, 85, 480, 2780, 17211, 102782, 645484, 3936420, 24633252, 150911826, 941907715, 5783836527, 36025719987, 221566632164, 1377925800191, 8486654284672, 52714390850462, 324976079474744, 2016735929148039, 12443708121368662, 77167572875652387, 476406669588897579

Offset: 1

Author

R. H. Hardin, Apr 20 2014

Keywords

• nonn

Examples

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

Links

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

Crossrefs

Column 4 of A241397.