A254535 Number of length n 1..(4+2) arrays with no leading partial sum equal to a prime.

3, 10, 40, 160, 670, 3001, 13503, 60408, 270370, 1192385, 5221700, 23404787, 108379668, 507618711, 2353392292, 10735523052, 48337299889, 216062343583, 966793284879, 4375808357962, 20209591137998, 95483805098650

Offset: 1

Author

R. H. Hardin, Feb 01 2015

Keywords

• nonn

Comments

Column 4 of A254539

Examples

			Some solutions for n=4
..4....6....4....1....1....6....4....6....4....1....4....1....1....6....6....4
..2....3....2....5....5....6....6....3....2....5....6....3....3....6....2....5
..2....5....3....3....2....3....5....5....3....2....2....4....6....6....4....6
..4....4....1....3....1....5....5....1....3....4....2....2....6....2....6....6
		

Links

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