A301437 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 8, 232, 23672, 8525992, 10857946336, 48849438137664, 776405369595079784, 43592748615027181849168, 8646411638193087437385791320, 6058323543759078862550444562319392

Offset

1,2

Comments

Diagonal of A301443.

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

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
..0..1..0..0..0. .0..1..0..0..1. .0..0..1..0..0. .0..0..1..1..1
..0..1..0..0..0. .0..1..0..1..1. .1..1..0..1..0. .0..1..1..1..1
..0..0..1..1..0. .1..0..1..0..0. .0..1..1..1..1. .0..0..0..0..0
..1..1..1..0..0. .0..0..1..0..0. .0..0..0..0..0. .1..0..0..0..0

Crossrefs

Cf. A301443.

Sequence in context: A222525 A214351 A303450 * A111836 A288546 A134504

Adjacent sequences: A301434 A301435 A301436 * A301438 A301439 A301440

Keyword

nonn

Author

R. H. Hardin, Mar 21 2018

Status

approved