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 A249537 #6 Jul 23 2025 12:04:49 %S A249537 3586,196346,6301554,99998070,928056514,6457498056,33973205930, %T A249537 147254632514,545212211958,1780901097736,5238019266772,14135340307786, %U A249537 35377663646434,82997343355558,184100266472014,388794359562662 %N A249537 Number of length 7+5 0..n arrays with no six consecutive terms having five times any element equal to the sum of the remaining five. %C A249537 Row 7 of A249530 %H A249537 R. H. Hardin, <a href="/A249537/b249537.txt">Table of n, a(n) for n = 1..27</a> %e A249537 Some solutions for n=2 %e A249537 ..0....0....0....0....0....0....0....1....2....0....0....2....0....0....1....0 %e A249537 ..1....1....1....0....1....2....1....0....0....1....2....0....0....1....0....2 %e A249537 ..2....0....2....0....1....0....2....2....0....0....0....1....2....2....1....1 %e A249537 ..0....0....2....2....0....0....1....1....1....1....0....0....2....2....2....1 %e A249537 ..0....2....1....2....0....1....2....2....1....0....0....0....1....1....1....0 %e A249537 ..0....0....1....2....0....2....2....1....1....1....1....0....2....1....2....0 %e A249537 ..0....0....2....1....0....2....0....2....2....1....2....1....2....2....2....1 %e A249537 ..0....1....1....2....1....2....2....1....2....2....0....1....2....1....1....0 %e A249537 ..2....1....0....1....1....0....0....1....0....0....0....1....0....0....2....2 %e A249537 ..2....1....2....1....2....1....1....0....2....0....2....0....1....0....2....2 %e A249537 ..2....0....1....2....1....2....0....2....2....1....0....1....1....0....0....0 %e A249537 ..1....0....2....1....2....2....2....2....0....0....2....1....2....2....1....2 %K A249537 nonn %O A249537 1,1 %A A249537 _R. H. Hardin_, Oct 31 2014