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 A252261 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7 1

%I

%S 103,272,3016,44612,984416,34351677,1834743688,150852965253,

%T 19211276199162,3761840357784248,1133324153448761962,

%U 526775964680392301856,377486194195325500755089

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

%C Diagonal of A252269

%H R. H. Hardin, <a href="/A252261/b252261.txt">Table of n, a(n) for n = 1..14</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 16 2014

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Last modified January 26 21:14 EST 2022. Contains 350600 sequences. (Running on oeis4.)