This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A255715 #6 Jul 23 2025 15:10:23 %S A255715 5,24,121,653,3764,22155,127375,721134,4201419,25338485,153827211, %T A255715 920423497,5427375260,32034890790,192848262264,1192406909119, %U A255715 7468582235924,46184458084732,277578788510692,1635584886442562 %N A255715 Number of length n 1..(7+2) arrays with no leading partial sum equal to a prime and no consecutive values equal. %C A255715 Column 7 of A255716 %H A255715 R. H. Hardin, <a href="/A255715/b255715.txt">Table of n, a(n) for n = 1..210</a> %e A255715 Some solutions for n=4 %e A255715 ..8....9....1....4....4....8....9....4....9....1....6....9....6....9....1....1 %e A255715 ..4....7....3....6....8....4....1....5....6....7....9....7....2....3....7....3 %e A255715 ..2....9....5....4....9....6....8....3....7....6....1....4....6....8....1....8 %e A255715 ..1....8....1....8....3....2....2....2....6....1....5....8....4....7....7....4 %Y A255715 Cf. A255716 %K A255715 nonn %O A255715 1,1 %A A255715 _R. H. Hardin_, Mar 03 2015