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A252051 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8 1

%I #4 Dec 13 2014 06:05:00

%S 7642,10324,17166,29180,112542,233342,398502,1545586,3493324,6364926,

%T 25030764,55982864,107529180,434690496,981158992,1847050606,

%U 7975660404,17661934362,33398453950,148936808798,330139202194,605355952468

%N Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8

%C Column 6 of A252053

%H R. H. Hardin, <a href="/A252051/b252051.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A252051/a252051.txt">Empirical recurrence of order 71</a>

%F Empirical recurrence of order 71 (see link above)

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2014

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Last modified April 24 19:31 EDT 2024. Contains 371962 sequences. (Running on oeis4.)