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Number of length n 1..(6+2) arrays with no leading or trailing partial sum equal to a prime
0

%I #3 Jan 26 2015 20:41:54

%S 4,11,47,195,898,4353,22189,112015,542397,2658643,13811570,74759723,

%T 402860778,2116039998,11034558825,58963729401,324783927568,

%U 1798939119729,9744887456018,51258432916302,268071351841619,1461410535224478

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

%C Column 6 of A254204

%e Some solutions for n=4

%e ..8....4....8....4....8....6....6....6....1....8....4....4....8....1....8....4

%e ..4....4....6....8....8....2....3....6....3....4....4....5....6....5....1....2

%e ..6....2....2....4....4....6....7....8....4....6....8....3....7....2....3....6

%e ..4....6....4....6....8....8....8....1....8....6....4....6....1....8....6....8

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2015