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A205026 Number of (n+1)X8 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards 1

%I

%S 13615376,14267356381,3650380799573,2691721552273415,

%T 932371404894182926,566608180773299047113,235682549037000868908322,

%U 128583965208974345291662172,58586608357082597713721493080

%N Number of (n+1)X8 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards

%C Column 7 of A205027

%H R. H. Hardin, <a href="/A205026/b205026.txt">Table of n, a(n) for n = 1..21</a>

%e Some solutions for n=4

%e ..0..1..2..3..2..2..1..3....2..3..1..1..2..2..1..1....2..0..2..3..1..0..3..3

%e ..1..0..0..0..0..0..0..0....3..0..0..0..0..0..0..0....3..0..2..3..1..0..0..0

%e ..0..0..0..1..1..2..2..2....3..0..2..2..3..1..3..0....3..0..0..0..0..0..2..1

%e ..1..1..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..3..2..2..0..1..1

%e ..1..1..0..2..0..0..1..1....3..3..2..3..2..0..2..3....0..0..3..2..2..0..0..3

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2012

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Last modified May 28 18:24 EDT 2022. Contains 354122 sequences. (Running on oeis4.)