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 A255713 #6 Jul 23 2025 15:10:11 %S A255713 3,9,33,120,480,2079,9044,39604,170835,720348,3105394,14050148, %T A255713 64838808,295178921,1315098518,5765163507,25132740083,110592507674, %U A255713 498297998116,2314042703759,10991409243669,52236818282458,242186086327901 %N A255713 Number of length n 1..(5+2) arrays with no leading partial sum equal to a prime and no consecutive values equal. %C A255713 Column 5 of A255716 %H A255713 R. H. Hardin, <a href="/A255713/b255713.txt">Table of n, a(n) for n = 1..210</a> %e A255713 Some solutions for n=4 %e A255713 ..1....1....6....4....6....6....6....1....4....4....1....1....6....6....6....6 %e A255713 ..3....5....3....5....2....4....3....5....2....5....5....5....3....2....3....2 %e A255713 ..4....3....7....7....4....5....1....6....3....1....2....4....5....1....7....1 %e A255713 ..1....7....6....6....3....7....4....3....5....5....4....2....7....6....5....5 %Y A255713 Cf. A255716 %K A255713 nonn %O A255713 1,1 %A A255713 _R. H. Hardin_, Mar 03 2015