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.

A280158 Number of nX5 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

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%I A280158 #4 Dec 27 2016 09:20:57
%S A280158 5,40,305,1854,10677,58852,318220,1695030,8941285,46760710,242970442,
%T A280158 1255597078,6458360287,33085037590,168885713050,859370947890,
%U A280158 4360537440625,22069557056618,111441207638795,561547964534696
%N A280158 Number of nX5 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
%C A280158 Column 5 of A280161.
%H A280158 R. H. Hardin, <a href="/A280158/b280158.txt">Table of n, a(n) for n = 1..210</a>
%H A280158 R. H. Hardin, <a href="/A280158/a280158.txt">Empirical recurrence of order 70</a>
%F A280158 Empirical recurrence of order 70 (see link above)
%e A280158 Some solutions for n=4
%e A280158 ..0..0..0..1..1. .0..0..1..1..1. .0..0..1..1..1. .0..0..1..1..1
%e A280158 ..1..1..0..0..1. .0..0..1..1..1. .0..1..1..0..0. .0..0..1..1..1
%e A280158 ..1..1..0..0..1. .1..0..0..0..1. .1..1..0..0..0. .0..0..1..0..0
%e A280158 ..1..0..0..1..1. .0..0..0..0..1. .1..1..0..0..0. .0..0..0..0..0
%Y A280158 Cf. A280161.
%K A280158 nonn
%O A280158 1,1
%A A280158 _R. H. Hardin_, Dec 27 2016