A209590 Number of n X n 0..5 arrays with every element equal to a diagonal or antidiagonal reflection.

6, 1296, 513216, 7316407296, 191221621088256, 179919658395455717376, 310357092660359621536382976, 19272907305680273946696375374708736, 2194189968466526991277450769351996054962176

Offset: 1

Author

R. H. Hardin Mar 10 2012

Keywords

• nonn

Comments

Column 5 of A209593

Examples

			Some solutions for n=3
..0..5..4....0..2..3....3..2..3....0..4..1....0..3..2....0..0..3....0..0..2
..5..4..1....2..0..0....5..5..2....4..1..3....5..2..3....5..1..0....3..5..0
..2..1..5....3..0..1....2..5..0....3..3..5....4..5..1....5..5..5....4..3..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..30

Formula

a(n) = 6 ^ (2*n-(n modulo 2)) * 66 ^ ((n*n-2*n+(n modulo 2))/4)