A281537 Number of nX5 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

2, 612, 14561, 52529, 130646, 290073, 610493, 1274531, 2667156, 5549073, 11333101, 22677459, 44625082, 86892393, 168012940, 322971613, 616923324, 1170830552, 2208492442, 4144258432, 7742439594, 14409433203, 26720926188, 49383541627

Offset

1,1

Comments

Column 5 of A281540.

Links

R. H. Hardin, Table of n, a(n) for n = 1..92

Example

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

Crossrefs

Cf. A281540.

Sequence in context: A291320 A100011 A172892 * A134796 A120830 A291340

Adjacent sequences: A281534 A281535 A281536 * A281538 A281539 A281540

Keyword

nonn

Author

R. H. Hardin, Jan 23 2017

Status

approved