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A207224 Number of nX4 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal 1

%I

%S 61,3721,100997,3447649,115679881,3814387801,125372637881,

%T 4126073501121,135963448993769,4480839360430545,147644379170646697,

%U 4864581400227966369,160280548163611896153,5281079669610169252337,174006141329285345485257

%N Number of nX4 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal

%C Column 4 of A207228

%H R. H. Hardin, <a href="/A207224/b207224.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 16 2012

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Last modified August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)