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 A206008 Number of (n+1)X7 0..2 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 12:37:09

%S 6688,45810,150396,1159120,3844878,32546974,107546742,986871314,

%T 3229296126,31610481596,102139460492,1050320011472,3348324332602,

%U 35728606613158,112397028073916,1233453060486582,3831555859611088

%N Number of (n+1)X7 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero

%C Column 6 of A206010

%H R. H. Hardin, <a href="/A206008/b206008.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 02 2012

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Last modified April 13 06:32 EDT 2024. Contains 371638 sequences. (Running on oeis4.)