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
Keywords
Examples
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
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A281605.
Comments