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.

A281770 Number of 6Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal 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 A281770 #4 Jan 29 2017 12:44:34
%S A281770 0,68,374,5948,49986,502276,4845178,43943360,414035752,3763905492,
%T A281770 34161108524,309491219676,2770210355448,24781891977992,
%U A281770 220487430433918,1953506661837984,17268182347051482,152093095781502104
%N A281770 Number of 6Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
%C A281770 Row 6 of A281765.
%H A281770 R. H. Hardin, <a href="/A281770/b281770.txt">Table of n, a(n) for n = 1..210</a>
%e A281770 Some solutions for n=4
%e A281770 ..0..0..0..0. .0..1..0..0. .0..0..0..1. .0..0..0..0. .0..0..0..0
%e A281770 ..0..0..0..1. .1..0..1..0. .0..0..1..1. .0..0..0..0. .0..0..0..0
%e A281770 ..0..0..1..1. .1..1..0..1. .0..0..1..1. .1..1..1..0. .1..1..0..0
%e A281770 ..0..0..1..1. .0..0..1..0. .0..1..1..1. .1..1..0..1. .1..1..1..0
%e A281770 ..1..1..0..0. .0..0..0..1. .1..0..1..0. .1..0..1..0. .1..1..0..1
%e A281770 ..1..1..0..0. .0..0..1..1. .0..1..0..1. .1..1..0..1. .1..1..1..1
%Y A281770 Cf. A281765.
%K A281770 nonn
%O A281770 1,2
%A A281770 _R. H. Hardin_, Jan 29 2017