A183887 Number of arrangements of n+3 numbers in 0..4 with each number being the sum mod 5 of three others.

1, 241, 8681, 63645, 363749, 1905097, 9681073, 48678653, 243871365, 1220204441, 6102563585, 30515709437, 152584140357, 762931805705, 3814681507825, 19073453656861, 95367363682085, 476837016657945, 2384185496162945

Offset: 1

Author

R. H. Hardin Jan 07 2011

Keywords

• nonn

Comments

Column 4 of A183892

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..62