A235587 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 rowwise and columnwise

20537, 1660676, 140378037, 11284713813, 864122401640, 61249068090242, 4044723177106236, 249130316102719498, 14439907606618894372, 792686015022473183671, 41515305615658138540805, 2086726767803908921050863

Offset

1,1

Comments

Column 4 of A235588

Links

R. H. Hardin, Table of n, a(n) for n = 1..67

Example

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

Crossrefs

Sequence in context: A187282 A235836 A235831 * A082254 A059050 A056073

Adjacent sequences: A235584 A235585 A235586 * A235588 A235589 A235590

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved