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Number of (n+1)X(3+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically
1

%I #5 Aug 11 2014 22:45:56

%S 64,1632,33708,650696,14465384,313201804,6514702216,139122934752,

%T 2976033930696,63123128916304,1342119519069652,28587959355513900,

%U 608076772769769316,12933230082531044888,275207426260812160768

%N Number of (n+1)X(3+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically

%C Column 3 of A232431

%H R. H. Hardin, <a href="/A232427/b232427.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A232427/a232427.txt">Empirical recurrence of order 55</a>

%F Empirical recurrence of order 55 (see link above)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 23 2013