A236596 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the lower median minus the upper median of every 2X2 subblock

256, 2680, 2680, 28462, 57496, 28462, 299860, 1235744, 1235744, 299860, 3170170, 26588346, 54793276, 26588346, 3170170, 33464862, 572295072, 2421675358, 2421675358, 572295072, 33464862, 353620413, 12319404000, 107677667581

Offset

1,1

Comments

Table starts

........256.........2680.........28462.........299860........3170170

.......2680........57496.......1235744.......26588346......572295072

......28462......1235744......54793276.....2421675358...107677667581

.....299860.....26588346....2421675358...222485308398.20496805956176

....3170170....572295072..107677667581.20496805956176

...33464862..12319404000.4768432194080

..353620413.265129548124

.3734464032

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Formula

Empirical for column k:

k=1: [linear recurrence of order 30]

Example

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

Crossrefs

Sequence in context: A235752 A235815 A235749 * A236593 A236319 A236315

Adjacent sequences: A236593 A236594 A236595 * A236597 A236598 A236599

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 29 2014

Status

approved