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A252367 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7 1

%I #6 Dec 17 2014 08:14:11

%S 3188,17340,124538,818040,5340334,35124242,230366506,1511215256,

%T 9934409558,65227813792,428045543104,2810372935518,18454316847202,

%U 121160816335182,795445333429948,5222481881638938,34288545449387208

%N Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7

%C Column 6 of A252369

%H R. H. Hardin, <a href="/A252367/b252367.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A252367/a252367.txt">Empirical recurrence of order 71</a>

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

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2014

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Last modified August 24 14:47 EDT 2024. Contains 375417 sequences. (Running on oeis4.)