A281608 Number of 5Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

41, 1617, 12413, 203276, 3401430, 52899445, 839574485, 13329701847, 211084448862, 3344465302550, 52990220564149, 839547337612225, 13301641083138936, 210748236247015012, 3339047332719365760

Offset

1,1

Comments

Row 5 of A281605.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A281605.

Sequence in context: A163050 A305863 A180667 * A162878 A163224 A163677

Adjacent sequences: A281605 A281606 A281607 * A281609 A281610 A281611

Keyword

nonn

Author

R. H. Hardin, Jan 25 2017

Status

approved