A204054 - OEIS

%I #5 Mar 31 2012 12:37:00

%S 37451727,361569647,2404876738,18005605178,135508809479,1065898305547,

%T 7515064468455,56550046316647,410996187334882,3091339683357650,

%U 22420992321577490,166361632260722451,1212902396590177130

%N Number of (n+2)X8 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 6 of A204056

%H R. H. Hardin, <a href="/A204054/b204054.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2012