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A281128 Number of nX6 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 15 2017 07:38:50

%S 28,8354,394202,10441416,250872018,5550177494,117185694820,

%T 2402634147622,48166257904672,949560765788620,18476307304202740,

%U 355730119319074370,6789821508663316636,128660125727762572228,2423000965950186875962

%N Number of nX6 0..2 arrays with no element equal to more than one 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 Column 6 of A281129.

%H R. H. Hardin, <a href="/A281128/b281128.txt">Table of n, a(n) for n = 1..29</a>

%e Some solutions for n=2

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

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

%Y Cf. A281129.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2017

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)