A254543 - OEIS

%I #4 Feb 01 2015 09:43:35

%S 4,50,135,670,1087,3383,6814,13843,20012,37643,50271,84258,124243,

%T 185263,233753,347471,423430,594001,776949,1021618,1205883,1612046,

%U 2004761,2549617,3112664,3856074,4411319,5541449,6253712,7547845,8918038

%N Number of length 5 1..(n+2) arrays with no leading partial sum equal to a prime

%C Row 5 of A254539

%H R. H. Hardin, <a href="/A254543/b254543.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..6....4....6....6....6....6....6....4....6....6....4....1....4....4....6....4

%e ..6....5....3....4....2....3....6....2....4....2....5....3....5....5....4....5

%e ..4....6....3....2....6....5....3....2....4....6....3....5....6....1....6....1

%e ..6....1....4....6....6....1....3....1....4....1....3....3....3....5....5....5

%e ..2....6....2....2....4....1....3....5....4....1....5....6....2....6....1....5

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2015