A218285 Hilltop maps: number of n X 5 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..4 n X 5 array.

31, 1019, 32739, 1048307, 33549827, 1073597617, 34355128651, 1099364046509, 35179647135791, 1125748640417277, 36023954390940183, 1152766473401775135, 36888525002033045085, 1180432731369782846491, 37773845205582064670135

Offset

1,1

Comments

Column 5 of A218288.

Links

R. H. Hardin, Table of n, a(n) for n = 1..38

Example

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

Crossrefs

Cf. A218288.

Sequence in context: A158675 A154808 A307588 * A138861 A015257 A199234

Adjacent sequences: A218282 A218283 A218284 * A218286 A218287 A218288

Keyword

nonn

Author

R. H. Hardin, Oct 25 2012

Status

approved