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1/120 the number of n X 4 arrays of integers in 1..6 with no element or any of its neighbors having the same value.
1

%I #6 Apr 25 2023 13:46:55

%S 4,147,1236,11586,100704,909780,8061360,72279888,644409672,5763665256,

%T 51460343508,459865182720,4107418650972,36696235666668,

%U 327803328407400,2928457191806580,26160556962790800,233703185202652428

%N 1/120 the number of n X 4 arrays of integers in 1..6 with no element or any of its neighbors having the same value.

%H R. H. Hardin, <a href="/A180375/b180375.txt">Table of n, a(n) for n=1..69</a>

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 01 2010