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A204055 Number of (n+2)X9 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 1

%I

%S 290942303,2777961511,18455232523,133138952807,1017086083917,

%T 7515064468455,58142833651117,412455945842695,3064813457955803,

%U 22227920370644935,163207802839017919,1189958959521461223

%N Number of (n+2)X9 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order

%C Column 7 of A204056

%H R. H. Hardin, <a href="/A204055/b204055.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2012

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Last modified August 9 06:39 EDT 2022. Contains 356017 sequences. (Running on oeis4.)