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A276244 Number of nX4 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.

%I A276244 #4 Aug 25 2016 11:00:57
%S A276244 6,72,279,1447,7316,36744,188696,966555,4951790,25428687,130544436,
%T A276244 670268288,3442454805,17679508687,90799294877,466351655607,
%U A276244 2395200182414,12301874919271,63183522824553,324515866624876,1666740802461017
%N A276244 Number of nX4 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.
%C A276244 Column 4 of A276248.
%H A276244 R. H. Hardin, <a href="/A276244/b276244.txt">Table of n, a(n) for n = 1..210</a>
%F A276244 Empirical: a(n) = 6*a(n-1) -5*a(n-2) +52*a(n-3) -290*a(n-4) +186*a(n-5) -750*a(n-6) +4724*a(n-7) -3230*a(n-8) +4486*a(n-9) -32737*a(n-10) +27394*a(n-11) -16656*a(n-12) +107909*a(n-13) -100918*a(n-14) +41478*a(n-15) -188601*a(n-16) +184276*a(n-17) -63820*a(n-18) +185119*a(n-19) -179543*a(n-20) +55691*a(n-21) -102915*a(n-22) +95614*a(n-23) -26448*a(n-24) +31475*a(n-25) -27524*a(n-26) +6584*a(n-27) -4916*a(n-28) +4089*a(n-29) -840*a(n-30) +341*a(n-31) -278*a(n-32) +50*a(n-33) -7*a(n-34) +6*a(n-35) -a(n-36) for n>37
%e A276244 Some solutions for n=4
%e A276244 ..0..1..2..0. .0..1..1..2. .0..1..2..2. .0..0..1..1. .0..1..2..2
%e A276244 ..0..0..1..2. .2..2..1..1. .2..0..1..1. .1..0..0..2. .2..0..1..1
%e A276244 ..2..2..0..1. .1..2..2..0. .2..2..0..0. .2..2..1..0. .1..2..0..1
%e A276244 ..0..2..2..0. .0..1..1..2. .0..1..2..2. .0..0..2..1. .1..1..2..0
%Y A276244 Cf. A276248.
%K A276244 nonn
%O A276244 1,1
%A A276244 _R. H. Hardin_, Aug 25 2016