A218424 Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, vertical or antidiagonal neighbor in a random 0..1 nX6 array.

31, 2849, 158429, 9539915, 572765605, 34328798853, 2058493362799, 123428176573409, 7400808508179025, 443756537313437079, 26607874601757021869, 1595422183998461122637, 95662355032495391763215

Offset

1,1

Comments

Column 6 of A218426

Links

R. H. Hardin, Table of n, a(n) for n = 1..44

Example

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

Crossrefs

Sequence in context: A173563 A190527 A106205 * A354221 A259866 A377754

Adjacent sequences: A218421 A218422 A218423 * A218425 A218426 A218427

Keyword

nonn

Author

R. H. Hardin, Oct 28 2012

Status

approved