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A204346 Number of (n+2)X5 0..3 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..3 introduced in row major order 1

%I #5 Mar 31 2012 12:37:01

%S 30378276,22275534255,16256855591536,11860456910608960,

%T 8653701637919899728,6313899655904879255175,4606746353051274080442020,

%U 3361172935168170742873724992,2452378030687848539033613343420

%N Number of (n+2)X5 0..3 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..3 introduced in row major order

%C Column 3 of A204351

%H R. H. Hardin, <a href="/A204346/b204346.txt">Table of n, a(n) for n = 1..34</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 14 2012

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Last modified April 17 22:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)