A254541 Number of length 3 1..(n+2) arrays with no leading partial sum equal to a prime.

1, 8, 15, 40, 49, 105, 163, 253, 307, 466, 540, 768, 997, 1283, 1442, 1862, 2051, 2562, 3053, 3627, 3936, 4749, 5465, 6368, 7230, 8270, 8848, 10189, 10805, 12187, 13557, 15138, 16715, 18646, 19585, 21596, 23572, 25845, 27081, 29803, 31136, 33942, 36650

Offset: 1

Author

R. H. Hardin, Feb 01 2015

Keywords

• nonn

Comments

Row 3 of A254539

Examples

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

Links

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