A236871 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal

4131, 46023, 499947, 5913287, 68777909, 826928057, 9850162103, 119172787543, 1434649920667, 17412329016137, 210815312004247, 2564264418734901, 31158752923844559, 379690905863880779, 4625670882160203303

Offset

1,1

Comments

Column 4 of A236875

Links

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

Example

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

Crossrefs

Sequence in context: A339798 A168631 A117810 * A300194 A188254 A162003

Adjacent sequences: A236868 A236869 A236870 * A236872 A236873 A236874

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved