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 A222484 Number of nX4 0..2 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order 1

%I #4 Feb 22 2013 07:58:47

%S 3,5,33,270,3219,34851,374375,3973169,42982280,460903822,4976455334,

%T 53808006211,581903007779,6320908811064,68518381809825,

%U 746547109498241,8112995455405661,88582659132995459,964996864754354180

%N Number of nX4 0..2 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

%C Column 4 of A222488

%H R. H. Hardin, <a href="/A222484/b222484.txt">Table of n, a(n) for n = 1..126</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 22 2013

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Last modified July 19 10:10 EDT 2024. Contains 374392 sequences. (Running on oeis4.)