A297659 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.

1, 1632, 55706, 1105531, 46187510, 1906300826, 63350980838, 2211348272559, 81510059624659, 2921136549256989, 103683457156054557, 3719547264451758684, 133489746983350501721, 4775013243230452400632, 170915659747129027279021

Offset

1,2

Comments

Row 6 of A297654.

Links

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

Example

Some solutions for n=3
..0..1..1. .0..1..1. .0..1..1. .1..0..0. .0..1..1. .1..1..0. .0..0..0
..0..0..0. .1..1..0. .0..0..1. .0..1..0. .0..0..1. .0..0..0. .1..1..1
..0..0..1. .0..1..0. .1..1..1. .0..1..0. .0..0..1. .1..1..0. .1..1..0
..0..1..0. .1..1..1. .0..0..0. .1..0..0. .0..1..0. .0..1..0. .0..0..0
..1..0..1. .0..1..0. .0..0..1. .0..1..1. .1..1..0. .0..1..0. .1..1..0
..0..1..1. .1..1..0. .0..1..1. .1..1..0. .0..1..0. .0..1..1. .1..1..0

Crossrefs

Cf. A297654.

Sequence in context: A063891 A254849 A237923 * A219007 A072409 A052455

Adjacent sequences: A297656 A297657 A297658 * A297660 A297661 A297662

Keyword

nonn

Author

R. H. Hardin, Jan 02 2018

Status

approved