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%I #4 Jan 26 2015 20:39:29
%S 2,1,2,6,11,27,53,133,310,691,1722,4898,13169,31188,68247,151695,
%T 355719,880650,2386625,7052660,20845775,57431942,145661869,346176887,
%U 792710311,1828054653,4509979089,12381748520,37284100779,117101693844,362950924700
%N Number of length n 1..(2+2) arrays with no leading or trailing partial sum equal to a prime
%C Column 2 of A254204
%H R. H. Hardin, <a href="/A254198/b254198.txt">Table of n, a(n) for n = 1..49</a>
%e All solutions for n=4
%e ..4....4....4....4....1....4
%e ..2....4....2....2....3....4
%e ..4....2....3....2....2....4
%e ..4....4....1....4....4....4
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 26 2015
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