A280282 Number of nX5 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

8, 2894, 259040, 18844474, 1240628942, 77217209188, 4633270354464, 270955366695864, 15546377295977053, 878972943594068704, 49118677321905379365, 2718859223224974395528, 149313335035761869484749

Offset

1,1

Comments

Column 5 of A280284.

Links

R. H. Hardin, Table of n, a(n) for n = 1..46

Example

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

Crossrefs

Cf. A280284.

Sequence in context: A046248 A185901 A078525 * A125539 A297922 A298546

Adjacent sequences: A280279 A280280 A280281 * A280283 A280284 A280285

Keyword

nonn

Author

R. H. Hardin, Dec 30 2016

Status

approved