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A223039 Number of nX4 0..3 arrays with no more than floor(nX4/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1

%I #4 Mar 12 2013 18:33:40

%S 11,1265,229437,42964721,8206670940,1590576924149,311543161837482,

%T 61504928367575855,12217149892788877445,2438751075983097268086,

%U 488783777099597628446445,98294363180577784998680559

%N Number of nX4 0..3 arrays with no more than floor(nX4/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

%C Column 4 of A223041

%H R. H. Hardin, <a href="/A223039/b223039.txt">Table of n, a(n) for n = 1..23</a>

%e Some solutions for n=3

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

%e ..3..0..3..0....1..1..2..2....2..0..3..0....2..1..2..2....3..1..0..3

%e ..3..0..1..1....2..0..3..0....3..2..1..2....3..1..0..3....0..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 12 2013

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)