A302527 Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

8, 98, 730, 5942, 128242, 1275348, 16130212, 303355178, 3654880956, 51530586242, 829503866128, 11159474949120, 160761590077504, 2423517947094100, 34130627941733812, 494058647385825910, 7263463498716354406

Offset: 1

Author

R. H. Hardin, Apr 09 2018

Keywords

• nonn

Comments

Column 7 of A302528.

Examples

			Some solutions for n=5
..0..0..1..1..1..0..0. .0..0..0..0..1..1..0. .0..0..0..1..0..1..1
..0..1..1..0..1..1..1. .1..1..1..1..0..0..0. .1..1..1..1..0..0..1
..0..1..0..1..1..1..1. .0..1..0..1..0..1..1. .0..0..0..1..0..1..0
..0..0..1..1..1..0..0. .1..0..1..1..0..1..1. .1..0..1..1..0..0..0
..1..1..0..0..1..1..0. .0..1..0..0..1..0..1. .0..1..0..1..0..1..1
		

Links

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

Crossrefs

Cf. A302528.