A301889 Number of 6Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

32, 233, 917, 2340, 7869, 46079, 223869, 981222, 4188971, 19744757, 93794562, 441318698, 2061633703, 9717028077, 46010651829, 218113415765, 1034263991109, 4906086778690, 23287878252238, 110581556348153, 525174708228782

Offset

1,1

Comments

Row 6 of A301884.

Links

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

Example

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

Crossrefs

Cf. A301884.

Sequence in context: A301795 A301968 A208641 * A302085 A229400 A223250

Adjacent sequences: A301886 A301887 A301888 * A301890 A301891 A301892

Keyword

nonn

Author

R. H. Hardin, Mar 28 2018

Status

approved