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 A206127 Number of (n+1)X8 0..2 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors 1

%I #5 Mar 31 2012 12:37:10

%S 74714,2591052,112183711,5199505646,242348711498,11329725297298,

%T 529835514016558,24790820344981160,1159975079177724794,

%U 54282106023803646726,2540175779566884282117,118872371638134536408162

%N Number of (n+1)X8 0..2 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors

%C Column 7 of A206128

%H R. H. Hardin, <a href="/A206127/b206127.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2012

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Last modified May 20 23:09 EDT 2024. Contains 372720 sequences. (Running on oeis4.)