cp's OEIS Frontend

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.

A189694 Number of nX7 binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally.

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%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