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A205997 Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero 1

%I #5 Mar 31 2012 12:37:09

%S 54738,2436706,111764603,5195655486,242338696294,11329617750556,

%T 529835251171222,24790817051128828,1159975071698596954,

%U 54282105915446216444,2540175779339071267853,118872371634378189759334

%N Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero

%C Column 7 of A205998

%H R. H. Hardin, <a href="/A205997/b205997.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 02 2012

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)