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.

A231661 Number of nX6 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.

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%I A231661 #6 Jul 23 2025 06:37:10
%S A231661 121,10789,1607589,206363144,23632808750,2825994465190,
%T A231661 344368908016123,41555342706134920,5000894272327355414,
%U A231661 603091853962176844424,72751735500292340340157,8772519253282465553808508
%N A231661 Number of nX6 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.
%C A231661 Column 6 of A231663
%H A231661 R. H. Hardin, <a href="/A231661/b231661.txt">Table of n, a(n) for n = 1..210</a>
%e A231661 Some solutions for n=2
%e A231661 ..2..1..0..0..1..1....1..2..1..2..2..0....2..0..0..1..2..2....1..2..0..0..1..2
%e A231661 ..2..0..0..0..2..1....1..1..1..2..0..0....1..0..2..1..1..1....1..1..0..1..1..2
%K A231661 nonn
%O A231661 1,1
%A A231661 _R. H. Hardin_, Nov 12 2013