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Number of nX7 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.
1

%I #4 Jul 10 2016 20:00:22

%S 32,972,465,2291,10337,49697,237807,1143185,5539989,26833885,

%T 130079497,632358111,3069896886,14919608999,72537188422,352492355625,

%U 1713947371548,8332597817985,40508772974972,196969575853783,957632906229433

%N Number of nX7 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.

%C Column 7 of A274895.

%H R. H. Hardin, <a href="/A274894/b274894.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A274895.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 10 2016