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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 4
256, 2680, 2680, 28462, 57496, 28462, 299860, 1235744, 1235744, 299860, 3170170, 26588346, 54793276, 26588346, 3170170, 33464862, 572295072, 2421675358, 2421675358, 572295072, 33464862, 353620413, 12319404000, 107677667581 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified February 21 02:53 EST 2019. Contains 320364 sequences. (Running on oeis4.)