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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.

A188506 Number of nX7 binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.

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%I A188506 #7 Jul 22 2025 11:14:18
%S A188506 65,4225,92597,1512392,30288308,697038111,15602080066,335304991524,
%T A188506 7194757384224,155853551899068,3383311479703509,73314613539836869,
%U A188506 1587497536509020156,34383826361857099073,744867940878570173157
%N A188506 Number of nX7 binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.
%C A188506 Column 7 of A188508
%H A188506 R. H. Hardin, <a href="/A188506/b188506.txt">Table of n, a(n) for n = 1..200</a>
%e A188506 Some solutions for 3X7
%e A188506 ..1..1..1..1..1..0..0....0..1..1..0..0..1..1....1..0..1..1..0..1..1
%e A188506 ..0..0..0..0..1..1..0....1..1..1..0..1..1..1....1..0..0..0..0..1..1
%e A188506 ..0..0..0..0..0..1..1....1..1..1..0..1..1..1....0..0..0..1..1..1..1
%K A188506 nonn
%O A188506 1,1
%A A188506 _R. H. Hardin_ Apr 02 2011

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