A279970 Number of n X n 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 3, 50, 1922, 124030, 14787217, 3444870482, 1641425782980, 1628526202127628, 3404399281023205196, 15152580196285407820510

Offset: 1

Author

R. H. Hardin, Dec 24 2016

Keywords

• nonn

Comments

Diagonal of A279977.

Examples

			Some solutions for n=4
..0..1..1..0. .0..1..0..0. .0..1..0..0. .0..1..0..1. .0..1..0..0
..1..0..0..1. .1..1..1..0. .0..1..1..0. .0..0..0..1. .0..1..1..0
..1..0..1..0. .0..0..1..0. .1..0..1..0. .1..1..0..1. .0..0..0..1
..0..1..0..1. .1..1..0..1. .0..0..1..1. .1..1..0..1. .1..1..1..0
		

Crossrefs

Cf. A279977.