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A254206
Number of length 3 1..(n+2) arrays with no leading or trailing partial sum equal to a prime
1
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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved