A263052 Number of (n+1)X(n+1) 0..1 arrays with each row and column not divisible by 3, read as a binary number with top and left being the most significant bits.

2, 33, 1666, 498597, 439260642, 1825928130193, 26380510465997186, 1607516667474074649381, 373842629115554331580791202, 353418497958270475251697468005873

Offset: 1

Author

R. H. Hardin, Oct 08 2015

Keywords

• nonn

Comments

Diagonal of A263060.

Examples

			Some solutions for n=3
..1..0..1..1....1..0..0..0....0..1..0..1....1..0..1..1....1..0..1..1
..0..1..0..0....0..1..1..1....0..0..1..0....0..0..0..1....0..1..0..1
..1..0..1..1....1..0..1..0....0..1..0..1....1..0..1..1....0..1..1..1
..0..0..1..0....1..0..1..1....1..1..1..0....1..1..1..0....0..1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..11

Crossrefs

Cf. A263060.