A237205 Number of (n+1)X(2+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal

1160, 8396, 59386, 472096, 3795060, 31758656, 268073808, 2299621682, 19798836956, 171720524760, 1490935517068, 12994101833060, 113246139505684, 989136025760348, 8636006648736322, 75505947589499378, 659829426416683152

Offset

1,1

Comments

Column 2 of A237211

Links

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

R. H. Hardin, Empirical recurrence of order 97

Formula

Empirical recurrence of order 97 (see link above)

Example

Some solutions for n=3
..3..1..3....0..1..2....0..0..0....0..3..2....1..1..3....0..2..0....1..3..1
..1..2..1....2..3..0....2..1..3....1..3..3....3..0..1....2..0..2....2..0..2
..3..1..0....3..2..1....1..1..1....0..3..2....1..1..1....2..0..2....2..1..2
..2..1..1....2..3..0....1..1..3....3..1..3....0..2..3....0..2..0....2..3..0

Crossrefs

Sequence in context: A219148 A031532 A168248 * A358868 A236814 A152307

Adjacent sequences: A237202 A237203 A237204 * A237206 A237207 A237208

Keyword

nonn

Author

R. H. Hardin, Feb 05 2014

Status

approved