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A281324 Number of nX6 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 20 2017 09:45:06

%S 28,22342,5192104,977717308,166805996158,26899223667928,

%T 4181821443113978,633606104886468360,94186568347536816634,

%U 13796519486189257667162,1997432551613036750016196,286445189090932989849214302

%N Number of nX6 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 6 of A281326.

%H R. H. Hardin, <a href="/A281324/b281324.txt">Table of n, a(n) for n = 1..57</a>

%e Some solutions for n=2

%e ..0..1..0..1..2..2. .0..0..1..2..0..1. .0..1..0..1..2..2. .0..1..2..1..1..0

%e ..1..1..0..1..1..2. .1..2..0..1..1..1. .0..1..2..0..2..0. .1..2..2..0..1..0

%Y Cf. A281326.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 20 2017

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)