A282187 Number of nX4 0..2 arrays with no element equal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 8, 2919, 418178, 48031921, 4907541118, 469203486998, 42928015621172, 3806828257481312, 329774740386192866, 28049508537324967898, 2350870780417385140186, 194645816227581507757308

Offset

1,2

Comments

Column 4 of A282189.

Links

R. H. Hardin, Table of n, a(n) for n = 1..57

Example

Some solutions for n=3
..0..1..0..0. .0..1..2..2. .0..0..1..1. .0..1..2..0. .0..1..2..2
..1..1..1..2. .2..2..2..0. .1..1..1..2. .1..0..0..0. .0..2..2..1
..2..1..1..1. .1..2..2..1. .2..1..1..0. .1..0..0..0. .2..2..2..0

Crossrefs

Cf. A282189.

Sequence in context: A299397 A299227 A300039 * A217270 A137565 A281323

Adjacent sequences: A282184 A282185 A282186 * A282188 A282189 A282190

Keyword

nonn

Author

R. H. Hardin, Feb 08 2017

Status

approved