cp's OEIS Frontend

A255720 Number of length 5 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal.

%I A255720 #6 Jul 23 2025 15:10:56
%S A255720 1,8,47,261,480,1707,3764,8072,12646,24669,34201,58940,89397,135543,
%T A255720 174896,264549,327946,465565,617508,818021,977617,1318930,1657755,
%U A255720 2121986,2611024,3251371,3748275,4735382,5375729,6512710,7733039,9256904
%N A255720 Number of length 5 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal.
%C A255720 Row 5 of A255716
%H A255720 R. H. Hardin, <a href="/A255720/b255720.txt">Table of n, a(n) for n = 1..210</a>
%e A255720 Some solutions for n=4
%e A255720 ..6....4....6....1....4....1....6....6....6....6....4....4....1....1....6....4
%e A255720 ..4....2....2....3....5....3....3....3....4....3....6....2....5....5....4....5
%e A255720 ..5....3....1....4....6....4....6....5....2....1....5....3....6....4....5....6
%e A255720 ..3....5....5....2....3....6....3....4....6....2....6....1....3....5....6....5
%e A255720 ..6....4....4....4....2....2....2....2....3....6....3....2....5....6....5....2
%Y A255720 Cf. A255716
%K A255720 nonn
%O A255720 1,2
%A A255720 _R. H. Hardin_, Mar 03 2015