A280403 Number of 5Xn 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

0, 358, 4250, 35676, 292622, 2366358, 18736311, 146853252, 1138334886, 8744869344, 66639459103, 504226940280, 3791507476987, 28354207289578, 211028658043521, 1563987940294912, 11548040454805380, 84985576020376086

Offset

1,2

Comments

Row 5 of A280398.

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

Some solutions for n=4
..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..1..1. .0..0..0..0
..0..0..1..1. .1..1..1..2. .0..0..1..1. .0..0..1..1. .1..1..1..2
..1..1..2..2. .1..1..2..2. .0..0..0..2. .0..0..0..0. .1..1..2..2
..1..2..2..0. .2..2..2..1. .0..0..2..1. .2..2..0..0. .1..0..2..2
..2..1..0..0. .1..1..1..2. .2..2..1..1. .2..0..0..0. .0..2..2..2

Crossrefs

Cf. A280398.

Sequence in context: A278632 A108875 A236159 * A145533 A273806 A292618

Adjacent sequences: A280400 A280401 A280402 * A280404 A280405 A280406

Keyword

nonn

Author

R. H. Hardin, Jan 02 2017

Status

approved