A300887 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

21, 11, 148, 1822, 31867, 437276, 6236246, 88486037, 1253495751, 17820280071, 252432128095, 3581335862055, 50810347370710, 720844568426583, 10226876364949089, 145096143960674291, 2058575118040453456

Offset

1,1

Comments

Column 7 of A300888.

Links

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

Example

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

Crossrefs

Cf. A300888.

Sequence in context: A114011 A300943 A270790 * A301497 A258083 A260527

Adjacent sequences: A300884 A300885 A300886 * A300888 A300889 A300890

Keyword

nonn

Author

R. H. Hardin, Mar 14 2018

Status

approved