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A183697 Number of (n+1)X9 0..2 arrays with every 2X2 subblock nonsingular 1

%I #5 Mar 31 2012 12:35:53

%S 19165418,43352455562,95843840904146,213413389362873662,

%T 474135214633449382230,1054127029029754862576918,

%U 2343065856411597861794635150,5208444026905229671830632661366

%N Number of (n+1)X9 0..2 arrays with every 2X2 subblock nonsingular

%C Column 8 of A183698

%H R. H. Hardin, <a href="/A183697/b183697.txt">Table of n, a(n) for n = 1..28</a>

%e Some solutions for 3X9

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 06 2011

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Last modified April 12 19:05 EDT 2024. Contains 371636 sequences. (Running on oeis4.)