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A252038 Number of (n+2)X(6+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime 1

%I #4 Dec 12 2014 21:28:15

%S 1080979,2297641,1083611,3353508,30060975,248966785,759807163,

%T 8322287804,80058549769,231405295872,2847277173198,29309575490132,

%U 82709272927087,1076025229294297,11432884684320589,31965076595521008,427474706429778817

%N Number of (n+2)X(6+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime

%C Column 6 of A252039

%H R. H. Hardin, <a href="/A252038/b252038.txt">Table of n, a(n) for n = 1..48</a>

%e Some solutions for n=1

%e ..0..3..3..2..4..3..3..0....0..4..4..2..3..3..4..2....0..3..3..2..4..3..1..4

%e ..0..4..0..4..0..0..0..0....0..3..1..0..0..4..4..4....0..2..2..2..4..4..0..0

%e ..0..1..3..2..4..3..1..0....0..2..4..2..3..1..0..0....0..3..1..0..0..1..3..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2014

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Last modified April 16 11:48 EDT 2024. Contains 371711 sequences. (Running on oeis4.)