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A254537
Number of length n 1..(6+2) arrays with no leading partial sum equal to a prime
1
4, 20, 105, 576, 3383, 20393, 121774, 709169, 4121638, 24622476, 150895459, 928855881, 5659650136, 34105862488, 205228295685, 1249619101830, 7761595614134, 48955797807546, 308737202532449, 1916725035118260
OFFSET
1,1
COMMENTS
Column 6 of A254539
LINKS
EXAMPLE
Some solutions for n=4
..4....6....8....8....8....4....6....8....1....4....4....6....6....1....1....4
..4....8....2....8....6....2....4....4....7....5....5....8....8....3....5....2
..8....7....8....2....6....4....2....6....4....6....1....1....1....6....4....4
..8....1....6....7....7....4....4....8....8....1....5....3....5....2....5....2
CROSSREFS
Sequence in context: A195256 A131786 A061709 * A135159 A190724 A243585
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2015
STATUS
approved