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 A217981 #6 Jul 22 2025 23:45:58 %S A217981 26,26,676,4046,43258,363728,3375350,30097566,272859916,2457033362, %T A217981 22187715406,200128757472,1805997462058,16294400662942, %U A217981 147026523230292,1326594311794394,11969797169381830,108002268912887340 %N A217981 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..1 nX7 array. %C A217981 Column 7 of A217982 %H A217981 R. H. Hardin, <a href="/A217981/b217981.txt">Table of n, a(n) for n = 1..63</a> %e A217981 Some solutions for n=3 %e A217981 ..0..0..0..1..1..0..0....1..1..1..0..0..0..1....0..0..0..0..0..0..1 %e A217981 ..0..0..0..0..0..0..0....1..1..1..0..0..0..1....0..0..0..0..0..0..0 %e A217981 ..1..0..0..0..0..1..1....1..1..1..0..0..0..1....0..0..0..1..1..0..0 %K A217981 nonn %O A217981 1,1 %A A217981 _R. H. Hardin_ Oct 16 2012