A254205 Number of length 2 1..(n+2) arrays with no leading or trailing partial sum equal to a prime

0, 1, 1, 4, 4, 11, 16, 23, 23, 34, 34, 47, 58, 73, 73, 92, 92, 113, 130, 149, 149, 178, 197, 226, 249, 278, 278, 315, 315, 348, 377, 414, 447, 490, 490, 531, 568, 613, 613, 666, 666, 715, 758, 809, 809, 870, 917, 978, 1029, 1086, 1086, 1155, 1206, 1275, 1330, 1393

Offset

1,4

Comments

Row 2 of A254204

Links

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

Example

All solutions for n=4
..6....4....6....4
..4....4....6....6

Crossrefs

Sequence in context: A327684 A231064 A302516 * A048223 A358825 A214112

Adjacent sequences: A254202 A254203 A254204 * A254206 A254207 A254208

Keyword

nonn

Author

R. H. Hardin, Jan 26 2015

Status

approved