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A254207
Number of length 4 1..(n+2) arrays with no leading or trailing partial sum equal to a prime
1
0, 6, 9, 54, 59, 195, 315, 676, 786, 1571, 1743, 3055, 4150, 6173, 6771, 10272, 11043, 15676, 19401, 25430, 27112, 36782, 43100, 54658, 63832, 78460, 83191, 105054, 110008, 132262, 150922, 178462, 201003, 239821, 249418, 289635, 323607, 372848
OFFSET
1,2
COMMENTS
Row 4 of A254204
LINKS
EXAMPLE
Some solutions for n=4
..4....6....1....6....4....4....6....4....4....4....1....6....6....1....6....6
..2....4....3....6....2....4....6....6....2....6....5....3....4....5....2....6
..2....2....5....4....2....4....3....4....4....2....6....3....2....4....4....2
..4....6....1....6....6....4....1....4....6....4....4....6....4....6....4....6
CROSSREFS
Sequence in context: A126110 A372499 A340819 * A098662 A056425 A056416
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved