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.

A231975 Number of (n+1)X(6+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.

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%I A231975 #6 Jul 23 2025 06:46:09
%S A231975 361,5680,136900,3844551,100540729,2641967397,69043343121,
%T A231975 1809552010404,47496507516441,1245162776547248,32641634807741521,
%U A231975 855866713526323797,22440792778234532100,588379143180098326896,15426782848212128167009
%N A231975 Number of (n+1)X(6+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.
%C A231975 Column 6 of A231977
%H A231975 R. H. Hardin, <a href="/A231975/b231975.txt">Table of n, a(n) for n = 1..210</a>
%e A231975 Some solutions for n=2
%e A231975 ..0..1..0..0..1..0..0....0..0..0..1..0..0..0....1..0..0..0..0..1..0
%e A231975 ..0..1..0..0..0..0..0....1..0..0..0..0..0..1....0..0..0..0..0..0..0
%e A231975 ..0..0..0..1..1..0..0....0..0..1..0..0..0..1....0..1..0..0..1..1..0
%K A231975 nonn
%O A231975 1,1
%A A231975 _R. H. Hardin_, Nov 16 2013