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A252573 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7 1

%I

%S 9936,47737,208375,959944,6590930,31059674,155864925,994640586,

%T 4728064653,24277561799,152128655769,724041200896,3737920882959,

%U 23334351446462,111056940261198,574039942229995,3581491498190689

%N Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7

%C Column 7 of A252574

%H R. H. Hardin, <a href="/A252573/b252573.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 18 2014

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Last modified February 8 04:10 EST 2023. Contains 360134 sequences. (Running on oeis4.)