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A206509 Number of (n+1)X6 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards 1

%I #5 Mar 31 2012 12:37:11

%S 111495,10505604,769739571,47830788954,2671430859687,138401623325535,

%T 6781274991216915,318257080720663863,14433205926606629808,

%U 636578185379733865623,27437199789684970128768,1159984309083884155349523

%N Number of (n+1)X6 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards

%C Column 5 of A206512

%H R. H. Hardin, <a href="/A206509/b206509.txt">Table of n, a(n) for n = 1..122</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 08 2012

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Last modified April 12 20:17 EDT 2024. Contains 371636 sequences. (Running on oeis4.)