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A206221 Number of (n+1)X7 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing 0

%I #4 Mar 31 2012 12:37:10

%S 139390,53835891,9098547899,2537225006229,656654900321262,

%T 162241662044855141,33632275642926148580,5657294413089823562871

%N Number of (n+1)X7 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

%C Column 6 of A206223

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2012

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Last modified April 25 13:38 EDT 2024. Contains 371970 sequences. (Running on oeis4.)