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A210307 Number of (n+1)X7 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order 1

%I #5 Mar 31 2012 12:37:33

%S 446093,339125187,249417760123,183304255111499,134683159775208043,

%T 98959142504758664603,72710583058655511309563,

%U 53424368715204078393901419,39253750829733683281599662459,28841837470421440080166974554235

%N Number of (n+1)X7 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order

%C Column 6 of A210309

%H R. H. Hardin, <a href="/A210307/b210307.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 19 2012

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)