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A209595 Number of 4X4 0..n arrays with every element equal to a diagonal or antidiagonal reflection 1

%I #5 Mar 31 2012 12:37:29

%S 9216,1476225,51380224,791015625,7316407296,47738317081,241591910400,

%T 1007680691889,3610000000000,11438404249041,32754285674496,

%U 86161557405625,210866643477504,484962978515625,1056630674292736

%N Number of 4X4 0..n arrays with every element equal to a diagonal or antidiagonal reflection

%C Row 4 of A209593

%H R. H. Hardin, <a href="/A209595/b209595.txt">Table of n, a(n) for n = 1..50</a>

%F a(n) = (n+1) ^ 8 * ((n+1)*(2*n+1)) ^ 2

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 10 2012

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Last modified April 24 02:46 EDT 2024. Contains 371917 sequences. (Running on oeis4.)