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A186791 Half the number of (n+2)X6 binary arrays with each 3X3 subblock having a sum in 2..7 1

%I #5 Mar 31 2012 12:36:06

%S 115069,6687805,387763760,22495797451,1304974153960,75702797880635,

%T 4391582264258067,254759386224257430,14778806361675616311,

%U 857331004466757829463,49734493514935420081553,2885139849983393846466620

%N Half the number of (n+2)X6 binary arrays with each 3X3 subblock having a sum in 2..7

%C Column 4 of A186796

%H R. H. Hardin, <a href="/A186791/b186791.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X6 with a(1,1)=0

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 26 2011

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Last modified September 17 03:10 EDT 2024. Contains 375984 sequences. (Running on oeis4.)