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.

A231416 Number of (n+1)X(4+1) 0..2 arrays with no element equal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

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%I A231416 #7 Jul 23 2025 06:28:28
%S A231416 3838,424404,46978621,5203044823,576572713438,63894846010493,
%T A231416 7080853332198865,784704141897864326,86961390140923819589,
%U A231416 9637114526684569688989,1067990945993822381880678
%N A231416 Number of (n+1)X(4+1) 0..2 arrays with no element equal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.
%C A231416 Column 4 of A231419
%H A231416 R. H. Hardin, <a href="/A231416/b231416.txt">Table of n, a(n) for n = 1..210</a>
%H A231416 R. H. Hardin, <a href="/A231416/a231416.txt">Empirical recurrence of order 99</a>
%F A231416 Empirical recurrence of order 99 (see link above)
%e A231416 Some solutions for n=1
%e A231416 ..0..1..2..0..2....0..0..0..1..2....0..1..2..1..2....0..0..1..1..0
%e A231416 ..1..0..2..0..1....2..1..2..1..0....1..2..0..0..2....1..2..1..0..2
%K A231416 nonn
%O A231416 1,1
%A A231416 _R. H. Hardin_, Nov 08 2013