A297319 Number of 6Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s.

1, 616, 16389, 223995, 6623719, 200646607, 4893232934, 123820581049, 3282367305458, 85515734535996, 2212616825808470, 57500163901287398, 1495338053514246125, 38856248352062385594, 1009626165673776079481

Offset

1,2

Comments

Row 6 of A297314.

Links

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

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

Crossrefs

Cf. A297314.

Sequence in context: A260367 A218847 A219426 * A220391 A219415 A332161

Adjacent sequences: A297316 A297317 A297318 * A297320 A297321 A297322

Keyword

nonn

Author

R. H. Hardin, Dec 28 2017

Status

approved