A219140 Unchanging value maps: number of nX6 binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 nX6 array.
21, 225, 4033, 59127, 872437, 12867295, 191707377, 2851740545, 42351530487, 628917557052, 9343657589877, 138832484811480, 2062679454951201, 30644671161036036, 455284849342096283, 6764205083943142280
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..0..0..1..0....1..1..1..0..0..1....1..1..0..0..0..0....1..0..0..0..0..0 ..0..0..1..0..0..0....1..1..1..0..0..0....1..0..0..0..1..0....0..0..0..1..0..0 ..0..0..0..0..1..0....1..1..1..0..0..1....0..0..0..0..0..0....0..0..0..0..0..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..31
Comments