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 A255722 #6 Jul 23 2025 15:11:10 %S A255722 1,19,256,3435,9044,45735,127375,346499,667623,1659159,2752326, %T A255722 5689368,9976897,17538154,25598415,44565127,61843772,99471988, %U A255722 145959173,215170467,281539258,421251283,576147610,807868670,1076649303,1462427055 %N A255722 Number of length 7 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal. %C A255722 Row 7 of A255716 %H A255722 R. H. Hardin, <a href="/A255722/b255722.txt">Table of n, a(n) for n = 1..210</a> %e A255722 Some solutions for n=4 %e A255722 ..1....6....1....6....1....4....4....4....4....1....6....4....6....6....6....6 %e A255722 ..5....4....3....2....3....6....5....5....2....3....3....2....4....2....3....2 %e A255722 ..6....2....2....1....2....5....6....6....3....5....5....4....5....4....5....1 %e A255722 ..3....3....3....5....3....6....5....3....6....6....4....2....3....2....1....3 %e A255722 ..5....5....6....6....5....1....4....4....5....3....2....6....4....1....5....6 %e A255722 ..2....4....1....5....6....6....3....2....6....2....6....2....2....3....1....3 %e A255722 ..5....6....2....3....2....4....6....3....2....6....2....4....3....6....5....4 %Y A255722 Cf. A255716 %K A255722 nonn %O A255722 1,2 %A A255722 _R. H. Hardin_, Mar 03 2015