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 A249535 #6 Jul 23 2025 12:04:35 %S A249535 928,28500,516652,5126096,32715172,162930700,645979544,2180179840, %T A249535 6459129344,17247070196,42221622718,96219694788,206032371126, %U A249535 418179166830,810260374778,1507365435756,2704999657670,4702434212288 %N A249535 Number of length 5+5 0..n arrays with no six consecutive terms having five times any element equal to the sum of the remaining five. %C A249535 Row 5 of A249530 %H A249535 R. H. Hardin, <a href="/A249535/b249535.txt">Table of n, a(n) for n = 1..28</a> %e A249535 Some solutions for n=2 %e A249535 ..0....2....0....0....2....2....2....2....1....1....2....0....2....1....1....1 %e A249535 ..0....0....1....1....1....1....0....0....1....1....0....0....0....0....0....2 %e A249535 ..2....0....2....2....1....2....2....1....0....2....0....0....1....2....2....0 %e A249535 ..2....2....0....2....0....0....0....0....2....0....2....2....1....2....1....2 %e A249535 ..2....0....1....1....2....2....2....2....0....2....0....2....0....0....0....1 %e A249535 ..2....0....0....1....2....2....1....0....0....2....0....2....0....0....0....2 %e A249535 ..1....2....1....1....2....0....2....2....0....2....2....0....1....2....1....2 %e A249535 ..2....0....0....2....1....0....1....0....1....1....1....2....0....2....1....2 %e A249535 ..1....1....1....2....0....0....2....2....1....2....2....2....0....1....2....0 %e A249535 ..2....2....0....0....0....0....2....1....1....1....0....2....1....0....1....1 %K A249535 nonn %O A249535 1,1 %A A249535 _R. H. Hardin_, Oct 31 2014