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A254224
Number of length 7 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal
1
0, 2, 15, 383, 633, 6490, 18214, 60168, 97089, 296955, 420163, 1046085, 1799943, 3545675, 4664339, 9251052, 11630683, 20703803, 29730723, 47075466, 56991009, 93151404, 122440340, 182865306, 239287220, 341720757, 401640735, 596658745
OFFSET
1,2
COMMENTS
Row 7 of A254218
LINKS
EXAMPLE
Some solutions for n=4
..4....6....6....4....1....6....4....4....6....6....6....1....6....1....4....4
..5....2....3....5....3....2....6....2....2....4....2....3....4....3....6....6
..3....4....5....3....4....4....4....4....6....2....6....6....5....2....2....4
..6....2....6....4....2....2....2....2....4....3....4....4....3....4....4....2
..4....6....4....5....6....1....6....4....6....6....6....2....4....2....6....4
..2....5....2....3....2....3....3....5....2....3....4....6....2....4....4....2
..6....1....4....6....4....6....1....1....4....6....6....4....6....6....6....4
CROSSREFS
Sequence in context: A231443 A068391 A215743 * A071102 A272899 A060381
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved