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A281800 Number of nX6 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 30 2017 10:40:08

%S 9,524,7293,71290,575062,4173476,28237876,181908580,1130079060,

%T 6826668428,40329856919,233963451718,1336918963187,7542580750766,

%U 42091126713821,232677185939116,1275632896739723,6942735865021594

%N Number of nX6 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%C Column 6 of A281802.

%H R. H. Hardin, <a href="/A281800/b281800.txt">Table of n, a(n) for n = 1..147</a>

%e Some solutions for n=4

%e ..0..0..0..1..0..0. .0..0..1..1..1..1. .0..1..0..0..0..0. .0..1..0..1..0..0

%e ..1..1..0..0..0..1. .1..1..0..0..1..1. .1..0..1..1..1..1. .1..0..1..0..0..0

%e ..1..1..1..0..1..1. .1..0..0..1..0..0. .0..1..1..1..1..1. .1..1..0..0..1..1

%e ..0..0..0..1..1..1. .0..1..1..0..1..1. .1..0..1..0..0..0. .1..1..0..1..1..1

%Y Cf. A281802.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 30 2017

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)