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A254210
Number of length 7 1..(n+2) arrays with no leading or trailing partial sum equal to a prime
1
0, 53, 118, 2197, 3098, 22189, 50166, 156454, 222665, 640886, 845325, 1995830, 3234225, 6187800, 7811859, 15035317, 18326311, 31910349, 44572678, 69639188, 82473044, 132683340, 170881758, 252397169, 325215746, 460488479, 533632442
OFFSET
1,2
COMMENTS
Row 7 of A254204
LINKS
EXAMPLE
Some solutions for n=4
..6....4....4....6....6....4....4....6....6....6....6....6....4....4....6....4
..4....4....5....4....2....2....4....6....4....2....6....2....6....2....2....2
..2....6....3....6....4....3....6....6....4....2....2....2....6....6....2....2
..4....4....4....4....4....3....6....6....6....2....6....4....5....2....4....1
..4....2....2....4....5....6....4....6....6....2....6....6....1....6....6....1
..6....4....6....4....3....6....2....6....6....4....4....4....2....4....5....4
..4....4....6....4....6....6....4....6....6....4....6....4....6....4....1....4
CROSSREFS
Sequence in context: A044240 A044621 A239124 * A142125 A177105 A246933
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved