A280360 Number of nX5 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors and with new values introduced in order 0 sequentially upwards.

30, 1617, 78800, 3992071, 201054068, 10144351660, 511688896140, 25812250379197, 1302084964081326, 65683250595897258, 3313367690989159234, 167141663155726686922, 8431401872254944607810, 425319079112261667548370

Offset: 1

Author

R. H. Hardin, Jan 01 2017

Keywords

• nonn

Comments

Column 5 of A280362.

Examples

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

Links

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

Crossrefs

Cf. A280362.