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 A211699 #6 Jun 02 2025 07:48:06 %S A211699 1,2,3,4,5,6,7,8,11,16,23,32,43,56,71,93,127,178,251,351,483,652,878, %T A211699 1196,1656,2323,3277,4613,6441,8938,12400,17294,24310,34413,48895, %U A211699 69427,98314,138953,196494,278704,397034,567889,814101,1167482,1673334,2397793 %N A211699 Number of nonnegative integer arrays of length n+2*7-2 with new values introduced in order 0 upwards and every value appearing only in runs of at least 7. %C A211699 Column 7 of A211700 %H A211699 R. H. Hardin, <a href="/A211699/b211699.txt">Table of n, a(n) for n = 1..210</a> %e A211699 All solutions for n=5 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....0....0 %e A211699 ..0....0....0....1....0 %e A211699 ..0....0....0....1....1 %e A211699 ..0....1....0....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %e A211699 ..0....1....1....1....1 %K A211699 nonn %O A211699 1,2 %A A211699 _R. H. Hardin_ Apr 19 2012