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%I A232518 #6 Nov 23 2014 17:10:26
%S A232518 8,200,128,2516,1730,32084,24388,408486,338230,5204242,4662970,
%T A232518 66327440,63885378,845656538,870767072,10785923316,11815519304,
%U A232518 137619885396,159699421970,1756562816428,2151083831244,22428629238030,28885857815230
%N A232518 Number of (3+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal
%C A232518 Row 3 of A232515
%H A232518 R. H. Hardin, <a href="/A232518/b232518.txt">Table of n, a(n) for n = 1..210</a>
%F A232518 Empirical: a(n) = 12*a(n-2) +a(n-3) +11*a(n-4) +a(n-5) -30*a(n-6) -22*a(n-7) +8*a(n-8) +8*a(n-9).
%F A232518 Empirical: G.f.: ( -8-200*x-32*x^2-108*x^3+94*x^4+444*x^5+256*x^6-120*x^7-120*x^8 ) / ( -1+12*x^2+x^3+11*x^4+x^5-30*x^6-22*x^7+8*x^8+8*x^9 ). - _R. J. Mathar_, Nov 23 2014
%e A232518 Some solutions for n=7
%e A232518 ..1..0..1..2..1..2..1..0....1..2..1..2..1..0..1..2....1..2..1..0..1..0..1..2
%e A232518 ..1..2..1..0..1..0..1..2....1..0..1..2..1..2..1..2....1..0..1..2..1..2..1..0
%e A232518 ..1..2..1..0..1..2..1..0....1..0..1..0..1..2..1..0....1..0..1..0..1..0..1..2
%e A232518 ..1..0..1..0..1..0..1..2....1..2..1..0..1..2..1..0....1..2..1..2..1..2..1..2
%K A232518 nonn
%O A232518 1,1
%A A232518 _R. H. Hardin_, Nov 25 2013

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