A293088 Number of 2 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 0, 5, 23, 124, 518, 2103, 8304, 32561, 127188, 497290, 1944992, 7609668, 29781058, 116601073, 456769568, 1790429581, 7022484654, 27560850105, 108231066278, 425262686638, 1671850997415, 6576007463557, 25878627324698, 101888312587090

Offset: 1

Author

R. H. Hardin, Sep 30 2017

Keywords

• nonn

Comments

Row 2 of A293087.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A293087.