A254201 - OEIS

%I #3 Jan 26 2015 20:41:36

%S 3,4,18,59,204,769,3098,14080,63868,261240,1030917,4350280,20376408,

%T 100217091,480075932,2180836235,9678232728,44364200452,215530397762,

%U 1076559054832,5260403805411,24406081179847

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

%C Column 5 of A254204

%e Some solutions for n=4

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

%e ..5....4....4....5....3....2....5....2....2....6....5....7....6....2....7....4

%e ..6....4....2....4....5....3....3....6....6....4....3....2....6....4....7....5

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2015