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A254534
Number of length n 1..(3+2) arrays with no leading partial sum equal to a prime
1
2, 5, 15, 45, 135, 421, 1466, 5403, 19417, 69205, 249569, 883285, 3024282, 10359274, 37010151, 138333876, 524680726, 1964881580, 7214899381, 26104002605, 93449335588, 331875353107, 1177784053061, 4229817098432, 15554800422055
OFFSET
1,1
COMMENTS
Column 3 of A254539
LINKS
EXAMPLE
Some solutions for n=4
..1....4....4....4....4....1....4....1....4....4....1....1....1....4....1....4
..3....5....4....5....2....3....4....3....2....5....5....5....3....5....5....5
..5....3....4....5....2....4....2....2....2....1....4....2....2....3....3....3
..3....2....3....2....1....4....2....4....2....2....5....4....2....4....3....3
CROSSREFS
Sequence in context: A336417 A232208 A294502 * A071727 A148354 A364330
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2015
STATUS
approved