A236202 T(n,k) = Number of (n+1) X (k+1) 0..3 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2 X 2 subblock.

256, 3020, 3020, 35874, 83520, 35874, 427680, 2333864, 2333864, 427680, 5098640, 65619060, 154372370, 65619060, 5098640, 60725856, 1841566940, 10285852068, 10285852068, 1841566940, 60725856, 723344402, 51632113352, 683105437984

Offset

1,1

Comments

Table starts

.......256........3020........35874........427680......5098640.......60725856

......3020.......83520......2333864......65619060...1841566940....51632113352

.....35874.....2333864....154372370...10285852068.683105437984.45319173356988

....427680....65619060..10285852068.1627490617396

...5098640..1841566940.683105437984

..60725856.51632113352

.723344402

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Formula

Empirical for column k:

k=1: [linear recurrence of order 28].

Example

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

Crossrefs

Sequence in context: A235747 A235506 A235502 * A236199 A188823 A205935

Adjacent sequences: A236199 A236200 A236201 * A236203 A236204 A236205

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 20 2014

Status

approved