A218596 Hilltop maps: number of 5Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 5Xn array

1, 737, 28305, 900213, 28543403, 908914463, 28976110305, 923902607653, 29456613886229, 939145718670695, 29942165452165937, 954626864774112217, 30435761282996284955, 970364022192333797121, 30937498799139172046789

Offset

1,2

Comments

Row 5 of A218592

Links

R. H. Hardin, Table of n, a(n) for n = 1..129

Example

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

Crossrefs

Sequence in context: A231034 A004078 A295984 * A043633 A171641 A251814

Adjacent sequences: A218593 A218594 A218595 * A218597 A218598 A218599

Keyword

nonn

Author

R. H. Hardin Nov 03 2012

Status

approved