|
%I #4 Feb 01 2015 09:40:08
%S 5,28,163,1026,6814,45472,297210,1936867,12941917,88456127,605472534,
%T 4098451778,27532173631,186053199184,1280442885415,8972454019845,
%U 63101697125668,438054873198566,2987530815338138,20248691923570271
%N Number of length n 1..(7+2) arrays with no leading partial sum equal to a prime
%C Column 7 of A254539
%H R. H. Hardin, <a href="/A254538/b254538.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..8....1....9....6....4....1....4....4....6....4....9....4....8....1....4....9
%e ..7....8....9....6....6....7....4....4....9....6....3....5....8....8....5....7
%e ..6....7....9....2....6....1....1....6....1....2....3....1....8....3....6....4
%e ..5....2....3....8....6....7....3....7....8....6....6....8....9....4....6....6
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 01 2015
| 