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A254200
Number of length n 1..(4+2) arrays with no leading or trailing partial sum equal to a prime
1
3, 4, 17, 54, 176, 610, 2197, 8358, 34005, 132483, 481155, 1740425, 6687987, 27786351, 119771265, 505378180, 2029295253, 7853415177, 30644058184, 126228069143, 551346605310, 2456789154285, 10682911165060, 44206259595121
OFFSET
1,1
COMMENTS
Column 4 of A254204
LINKS
EXAMPLE
Some solutions for n=4
..6....4....6....6....4....6....4....4....6....4....4....4....6....6....4....6
..6....6....6....6....4....6....2....4....4....2....2....2....4....4....6....6
..2....2....6....4....2....3....6....4....4....3....2....2....4....6....4....2
..6....4....6....4....4....1....4....6....4....1....4....6....6....4....4....4
CROSSREFS
Sequence in context: A187995 A296277 A303480 * A009208 A296283 A051473
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved