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A204720 Number of (n+1)X6 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards 1

%I

%S 1267,26128,457635,7549845,118449078,1793675684,26575441925,

%T 387101009622,5580848551153,79831422807638,1136428975809462,

%U 16120289112845166,228155596334383367,3224064782772702660,45513153001824893788

%N Number of (n+1)X6 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards

%C Column 5 of A204723

%H R. H. Hardin, <a href="/A204720/b204720.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 18 2012

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Last modified August 12 16:32 EDT 2022. Contains 356077 sequences. (Running on oeis4.)