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A254205
Number of length 2 1..(n+2) arrays with no leading or trailing partial sum equal to a prime
1
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
EXAMPLE
All solutions for n=4
..6....4....6....4
..4....4....6....6
CROSSREFS
Sequence in context: A327684 A231064 A302516 * A048223 A358825 A214112
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved