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A254209 Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime 1

%I #4 Jan 26 2015 20:46:27

%S 0,27,47,610,769,4353,9126,25389,33798,85437,105502,224414,342993,

%T 608338,731220,1297874,1513366,2471660,3316174,4892872,5594456,

%U 8495902,10580268,14864909,18500679,24975320,28034979,39173178,43315043,56273764,67819100

%N Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime

%C Row 6 of A254204

%H R. H. Hardin, <a href="/A254209/b254209.txt">Table of n, a(n) for n = 1..124</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 26 2015

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)