cp's OEIS Frontend

A254202 Number of length n 1..(6+2) arrays with no leading or trailing partial sum equal to a prime.

%I A254202 #5 Jul 23 2025 14:32:17
%S A254202 4,11,47,195,898,4353,22189,112015,542397,2658643,13811570,74759723,
%T A254202 402860778,2116039998,11034558825,58963729401,324783927568,
%U A254202 1798939119729,9744887456018,51258432916302,268071351841619,1461410535224478
%N A254202 Number of length n 1..(6+2) arrays with no leading or trailing partial sum equal to a prime.
%C A254202 Column 6 of A254204
%e A254202 Some solutions for n=4
%e A254202 ..8....4....8....4....8....6....6....6....1....8....4....4....8....1....8....4
%e A254202 ..4....4....6....8....8....2....3....6....3....4....4....5....6....5....1....2
%e A254202 ..6....2....2....4....4....6....7....8....4....6....8....3....7....2....3....6
%e A254202 ..4....6....4....6....8....8....8....1....8....6....4....6....1....8....6....8
%K A254202 nonn
%O A254202 1,1
%A A254202 _R. H. Hardin_, Jan 26 2015