A300943 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

21, 11, 101, 530, 2975, 16587, 99717, 628078, 4085574, 26803581, 176672818, 1167853353, 7727739359, 51133275030, 338411771448, 2240013488296, 14827127102453, 98143499126149, 649628272106039, 4299947674444031

Offset

1,1

Comments

Column 7 of A300944.

Links

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

Example

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

Crossrefs

Cf. A300944.

Sequence in context: A300505 A086981 A114011 * A270790 A300887 A301497

Adjacent sequences: A300940 A300941 A300942 * A300944 A300945 A300946

Keyword

nonn

Author

R. H. Hardin, Mar 16 2018

Status

approved