A300921 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 113, 1245, 30474, 640673, 14914968, 340365586, 7878577344, 181974865532, 4211913531378, 97445857016077, 2255166226115116, 52187511273194950, 1207741145471507139, 27949696919643128895, 646819606382316382862

Offset

1,2

Comments

Column 6 of A300923.

Links

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

Example

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

Crossrefs

Cf. A300923.

Sequence in context: A152928 A185337 A365592 * A075030 A079098 A187519

Adjacent sequences: A300918 A300919 A300920 * A300922 A300923 A300924

Keyword

nonn

Author

R. H. Hardin, Mar 15 2018

Status

approved