A254538 Number of length n 1..(7+2) arrays with no leading partial sum equal to a prime.

5, 28, 163, 1026, 6814, 45472, 297210, 1936867, 12941917, 88456127, 605472534, 4098451778, 27532173631, 186053199184, 1280442885415, 8972454019845, 63101697125668, 438054873198566, 2987530815338138, 20248691923570271

Offset: 1

Author

R. H. Hardin, Feb 01 2015

Keywords

• nonn

Comments

Column 7 of A254539

Examples

			Some solutions for n=4
..8....1....9....6....4....1....4....4....6....4....9....4....8....1....4....9
..7....8....9....6....6....7....4....4....9....6....3....5....8....8....5....7
..6....7....9....2....6....1....1....6....1....2....3....1....8....3....6....4
..5....2....3....8....6....7....3....7....8....6....6....8....9....4....6....6
		

Links

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