A302086 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

64, 610, 4485, 15017, 61536, 829709, 8320747, 61236964, 475553912, 4273584953, 37762232476, 320175140476, 2742090406127, 23843940674258, 207651146187174, 1806927945725421, 15747454326262786, 137456616613790057

Offset

1,1

Comments

Row 7 of A302081.

Links

R. H. Hardin, Table of n, a(n) for n = 1..155

Example

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

Crossrefs

Cf. A302081.

Sequence in context: A301969 A208642 A301890 * A229401 A232052 A200788

Adjacent sequences: A302083 A302084 A302085 * A302087 A302088 A302089

Keyword

nonn

Author

R. H. Hardin, Mar 31 2018

Status

approved