A219425 Unchanging value maps: number of 5 X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 5 X n array.
1, 200, 2043, 28888, 372560, 4775307, 61543422, 796901866, 10332516216, 133871792745, 1733790943515, 22454270113272, 290832016789657, 3766998295859184, 48791165925094356, 631950081288077455
Offset: 1
Keywords
Examples
Some solutions for n=3: ..0..0..0....1..0..0....1..0..1....1..1..0....0..0..0....0..0..0....0..0..0 ..0..1..0....0..0..1....0..0..1....0..0..1....0..1..1....0..0..1....1..0..1 ..0..0..1....0..0..1....0..0..0....1..0..0....1..0..0....1..0..1....1..1..0 ..0..0..1....1..1..0....0..0..0....1..0..0....1..0..1....0..0..1....0..0..1 ..0..0..1....0..0..0....1..0..1....0..0..1....0..0..0....1..0..0....1..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..28
Crossrefs
Cf. A219421.
Comments