A303045 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 86, 459, 1686, 9882, 63254, 345668, 1853428, 10924077, 67726475, 403669088, 2380303051, 14509938056, 90934286594, 564101640722, 3472561956163, 21698726671644, 137462825832230, 867471097889215, 5452385965874930

Offset: 1

Author

R. H. Hardin, Apr 17 2018

Keywords

• nonn

Comments

Row 7 of A303040.

Examples

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

Links

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

Crossrefs

Cf. A303040.