A279267 Number of nX7 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

15, 120, 1603, 21882, 283450, 3490152, 42093113, 498160278, 5812405127, 67071788240, 766923320987, 8702848263928, 98122997204330, 1100209100745782, 12277125522368779, 136425808025932376, 1510393582783303438

Offset

1,1

Comments

Column 7 of A279268.

Links

R. H. Hardin, Table of n, a(n) for n = 1..173

Example

Some solutions for n=4
..0..1..0..1..0..1..1. .0..1..0..0..1..0..1. .0..1..0..1..1..0..0
..1..0..1..1..0..0..0. .0..1..1..1..0..0..1. .1..0..1..0..0..1..1
..1..0..1..0..1..1..1. .1..0..0..1..0..1..0. .0..0..1..1..0..0..0
..0..1..0..1..0..1..0. .0..1..0..1..0..0..1. .1..1..0..0..1..0..1

Crossrefs

Cf. A279268.

Sequence in context: A321950 A081079 A138424 * A357602 A120794 A264377

Adjacent sequences: A279264 A279265 A279266 * A279268 A279269 A279270

Keyword

nonn

Author

R. H. Hardin, Dec 08 2016

Status

approved