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A254533 Number of length n 1..(2+2) arrays with no leading partial sum equal to a prime 1

%I

%S 2,3,8,20,50,126,329,956,2897,8341,23238,66544,194686,555838,1532445,

%T 4225095,12140873,36623429,112964359,345148105,1027400959,2988415841,

%U 8604041257,24715209608,70743541258,201532200098,575286723544

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

%C Column 2 of A254539

%H R. H. Hardin, <a href="/A254533/b254533.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

%e ..3....4....1....4....2....4....2....4....4....2....2....4....2....2....1....2

%e ..3....1....3....3....2....2....4....4....4....4....3....2....4....1....1....2

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2015

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Last modified May 22 17:21 EDT 2022. Contains 353957 sequences. (Running on oeis4.)