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A251982 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not 0 1 2 7 8 or 9 and every diagonal and antidiagonal sum 0 1 2 7 8 or 9 1

%I #4 Dec 12 2014 07:23:23

%S 6881308,782954632,13277304274,98312125934,1633057450764,

%T 41357385753908,692955339504464,11055555514035680,205164115130904298,

%U 3720828179140603290,64524367873316788320,1142575985619965697994

%N Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not 0 1 2 7 8 or 9 and every diagonal and antidiagonal sum 0 1 2 7 8 or 9

%C Column 7 of A251983

%H R. H. Hardin, <a href="/A251982/b251982.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2014

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Last modified April 24 14:32 EDT 2024. Contains 371960 sequences. (Running on oeis4.)