A235831 Number of (n+1)X(4+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

20537, 1403872, 87473420, 4948377018, 264596677243, 13346776888685, 644799592944959, 29960807090645254, 1349539165629052781, 59215045232911300005, 2544072449211208400584, 107453219274532827649732

Offset

1,1

Comments

Column 4 of A235833

Links

R. H. Hardin, Table of n, a(n) for n = 1..85

Example

Some solutions for n=1
..0..1..0..1..0....1..1..2..2..2....2..1..2..2..1....1..0..1..0..0
..0..1..1..0..2....0..0..2..0..1....1..1..1..2..1....0..2..1..2..2

Crossrefs

Sequence in context: A178585 A187282 A235836 * A235587 A082254 A059050

Adjacent sequences: A235828 A235829 A235830 * A235832 A235833 A235834

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved