A237218 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock equal

256, 1076, 1076, 4770, 6200, 4770, 22420, 37858, 37858, 22420, 107092, 246916, 316036, 246916, 107092, 523218, 1641592, 2836058, 2836058, 1641592, 523218, 2580120, 11208306, 25995322, 35342748, 25995322, 11208306, 2580120, 12870804

Offset

1,1

Comments

Table starts

.......256........1076..........4770...........22420............107092

......1076........6200.........37858..........246916...........1641592

......4770.......37858........316036.........2836058..........25995322

.....22420......246916.......2836058........35342748.........450437732

....107092.....1641592......25995322.......450437732........7967160058

....523218....11208306.....245347820......5924283662......145427157438

...2580120....77496396....2348424370.....79100011764.....2691555338564

..12870804...543475684...22810197506...1072438817644....50555783299908

..64634026..3843695622..223516305332..14686014044662...958982350912524

.326922108.27411717100.2208156420722.203006833705360.18370509923974254

Links

R. H. Hardin, Table of n, a(n) for n = 1..111

Formula

Empirical for column k:

k=1: [linear recurrence of order 27]

k=2: [order 58]

Example

Some solutions for n=2 k=4
..0..1..0..1..2....2..1..1..3..2....2..1..2..1..2....0..3..2..3..1
..2..1..0..1..0....0..2..3..2..0....1..1..1..1..1....1..0..1..0..2
..1..0..1..0..1....3..2..0..2..3....2..1..2..1..2....0..3..2..3..3

Crossrefs

Sequence in context: A236911 A236904 A206198 * A237212 A237694 A237688

Adjacent sequences: A237215 A237216 A237217 * A237219 A237220 A237221

Keyword

nonn,tabl

Author

R. H. Hardin, Feb 05 2014

Status

approved