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 A189694 #7 Jul 22 2025 11:53:08 %S A189694 128,16384,371641,9205575,151788273,2748122586,43645304766, %T A189694 733660344149,11722251157012,192737455311869,3101316117820858, %U A189694 50582965637175513,817179337255729430,13284346442987716235,215031581266863776172 %N A189694 Number of nX7 binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally. %C A189694 Column 7 of A189696 %H A189694 R. H. Hardin, <a href="/A189694/b189694.txt">Table of n, a(n) for n = 1..200</a> %e A189694 Some solutions for 3X7 %e A189694 ..0..1..0..1..0..1..1....0..1..0..1..1..1..0....0..0..0..1..1..0..0 %e A189694 ..1..1..0..1..1..0..1....1..0..1..0..0..0..0....1..1..1..0..1..1..1 %e A189694 ..0..1..0..1..1..0..0....0..1..0..1..0..1..0....0..0..1..0..0..0..0 %K A189694 nonn %O A189694 1,1 %A A189694 _R. H. Hardin_ Apr 25 2011