A237858 Number of (n+1)X(7+1) 0..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors

65, 2731, 66838, 1428967, 33328972, 810629762, 19525964230, 465620654717, 11103987320260, 265336172863532, 6342603678249803, 151563646660604118, 3621312217285001405, 86527631675101172844, 2067559557861331888310

Offset

1,1

Comments

Column 7 of A237859

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A004354 A016111 A217675 * A075474 A069225 A211960

Adjacent sequences: A237855 A237856 A237857 * A237859 A237860 A237861

Keyword

nonn

Author

R. H. Hardin, Feb 14 2014

Status

approved