A254223 Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.

0, 2, 6, 136, 192, 1472, 3720, 11182, 16698, 44652, 58174, 129560, 207946, 379126, 471170, 858104, 1025788, 1709908, 2349342, 3507974, 4085852, 6291688, 7972036, 11313026, 14262670, 19396782, 22025082, 31062140, 34653076, 45272262, 55014664

Offset: 1

Author

R. H. Hardin, Jan 26 2015

Keywords

• nonn

Comments

Row 6 of A254218

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..131