A254206 Number of length 3 1..(n+2) arrays with no leading or trailing partial sum equal to a prime

0, 2, 4, 17, 18, 47, 68, 119, 131, 226, 237, 370, 475, 644, 678, 949, 985, 1303, 1544, 1903, 1966, 2511, 2864, 3440, 3890, 4564, 4716, 5658, 5781, 6672, 7421, 8442, 9295, 10640, 10833, 12154, 13274, 14792, 15101, 17017, 17322, 19177, 20728, 22792, 23197

Offset

1,2

Comments

Row 3 of A254204

Links

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

Example

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

Crossrefs

Sequence in context: A105510 A155951 A208132 * A118242 A006276 A318367

Adjacent sequences: A254203 A254204 A254205 * A254207 A254208 A254209

Keyword

nonn

Author

R. H. Hardin, Jan 26 2015

Status

approved