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A254199 Number of length n 1..(3+2) arrays with no leading or trailing partial sum equal to a prime 1

%I

%S 2,1,4,9,21,47,118,333,984,3362,12643,39490,98542,227138,581068,

%T 1805114,6540668,24406560,85426548,274421967,815755674,2293410096,

%U 6495970695,20483223847,74509476318,290215121856,1104108812114,3894326230239

%N Number of length n 1..(3+2) arrays with no leading or trailing partial sum equal to a prime

%C Column 3 of A254204

%H R. H. Hardin, <a href="/A254199/b254199.txt">Table of n, a(n) for n = 1..31</a>

%e All solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2015

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Last modified May 14 16:48 EDT 2021. Contains 343898 sequences. (Running on oeis4.)