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A281164 Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 16 2017 09:00:57

%S 0,1388,84443,619502,4098895,22796763,111826676,511077328,2213577238,

%T 9219387478,37243761722,146843636089,567586366405,2158163009599,

%U 8094169842566,30006682413781,110139856305082,400800296115796

%N Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%C Column 7 of A281165.

%H R. H. Hardin, <a href="/A281164/b281164.txt">Table of n, a(n) for n = 1..83</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A281165.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 16 2017

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)