A296732 Number of n X n 0..1 arrays with each 1 adjacent to 1, 2 or 4 king-move neighboring 1's.

1, 11, 126, 4251, 458494, 114153198, 76925689840, 140147361921752, 663354662878523133, 8315652944981928201257

Offset

1,2

Comments

Diagonal of A296739.

Links

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

Example

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

Crossrefs

Cf. A296739.

Sequence in context: A209901 A285056 A015597 * A156970 A174270 A335954

Adjacent sequences: A296729 A296730 A296731 * A296733 A296734 A296735

Keyword

nonn

Author

R. H. Hardin, Dec 19 2017

Status

approved