A300805 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 8, 170, 9504, 1415898, 559634028, 585611214958, 1623186113355468, 11918444465082418938, 231853794250990035322072

Offset

1,2

Comments

Diagonal of A300811.

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Cf. A300811.

Sequence in context: A001534 A096486 A303463 * A317566 A301444 A333036

Adjacent sequences: A300802 A300803 A300804 * A300806 A300807 A300808

Keyword

nonn

Author

R. H. Hardin, Mar 13 2018

Status

approved