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A205925 Number of (n+1)X8 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero 1

%I #5 Mar 31 2012 12:37:07

%S 1035724,25017018,98991836,3047588270,10728448308,454195592550,

%T 1371965011892,78896152838142,203503107838856,15087999339134950,

%U 33757539378700388,3044839998379132364,6051262580845528912

%N Number of (n+1)X8 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero

%C Column 7 of A205926

%H R. H. Hardin, <a href="/A205925/b205925.txt">Table of n, a(n) for n = 1..76</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 01 2012

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Last modified September 7 03:23 EDT 2024. Contains 375728 sequences. (Running on oeis4.)