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A237182 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the minimum minus the lower median of every 2X2 subblock 7
81, 402, 402, 2061, 2700, 2061, 10488, 18062, 18062, 10488, 53401, 122882, 167387, 122882, 53401, 271420, 836966, 1580672, 1580672, 836966, 271420, 1382012, 5677464, 15073049, 21527380, 15073049, 5677464, 1382012, 7030000, 38493628 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........81.........402..........2061..........10488..........53401

.......402........2700.........18062.........122882.........836966

......2061.......18062........167387........1580672.......15073049

.....10488......122882.......1580672.......21527380......297032042

.....53401......836966......15073049......297032042.....6020147131

....271420.....5677464.....142485336.....4061242860...119868748036

...1382012....38493628....1348599340....55269492484..2375043608680

...7030000...261361496...12751872544...754851641410.47198092150236

..35777132..1774467580..120966824930.10327406038280

.182015816.12042475374.1143637823692

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 16]

k=2: [order 40]

EXAMPLE

Some solutions for n=3 k=4

..0..2..0..0..1....0..0..1..0..1....0..0..2..2..1....0..2..0..0..2

..0..1..1..2..1....0..0..2..2..0....0..0..0..2..1....0..2..2..1..1

..1..2..2..2..1....0..2..1..1..2....2..1..1..0..1....2..2..2..2..1

..2..1..0..0..1....2..2..1..1..1....2..2..1..0..2....1..1..0..2..0

CROSSREFS

Sequence in context: A097025 A074387 A008848 * A237176 A102741 A253495

Adjacent sequences:  A237179 A237180 A237181 * A237183 A237184 A237185

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 04 2014

STATUS

approved

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Last modified May 27 03:13 EDT 2022. Contains 354093 sequences. (Running on oeis4.)