A275136 Number of 7 X n 0..2 arrays with no element equal to any value at offset (-2,-2) (-1,0) or (-1,1) and new values introduced in order 0..2.

32, 972, 3148, 31772, 315021, 3146574, 31446544, 315531602, 3172042022, 31863778966, 320131530703, 3216908659843, 32328900869180, 324884120562167, 3264789400925918, 32809744239367085, 329717318770636840

Offset: 1

Author

R. H. Hardin, Jul 17 2016

Keywords

• nonn

Comments

Row 7 of A275131.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 53

Crossrefs

Cf. A275131.

Formula

Empirical recurrence of order 53 (see link above).