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A267933 T(n,k)=Number of nXk 0..3 arrays with every repeated value in every row and column greater than the previous repeated value. 6
4, 16, 16, 60, 256, 60, 222, 3600, 3600, 222, 804, 49284, 178068, 49284, 804, 2872, 646416, 8459154, 8459154, 646416, 2872, 10132, 8248384, 376812420, 1376175262, 376812420, 8248384, 10132, 35383, 102657424, 16109362560, 205495778969 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......4..........16.............60..............222...............804

.....16.........256...........3600............49284............646416

.....60........3600.........178068..........8459154.........376812420

....222.......49284........8459154.......1376175262......205495778969

....804......646416......376812420.....205495778969...100687082932722

...2872.....8248384....16109362560...29057389299071.46100277695598540

..10132...102657424...663451196118.3909876972823819

..35383..1251956689.26507885328672

.122480.15001350400

.420752

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 8]

k=2: [order 21]

k=3: [order 81]

EXAMPLE

Some solutions for n=3 k=4

..0..2..0..0....2..2..3..2....2..0..0..2....2..2..1..3....0..2..3..0

..2..1..2..3....2..1..3..1....0..2..0..3....2..1..1..2....2..3..2..1

..0..0..2..3....0..0..1..3....0..0..3..2....0..2..0..3....0..0..3..3

CROSSREFS

Sequence in context: A269109 A269201 A269289 * A206974 A206577 A207582

Adjacent sequences:  A267930 A267931 A267932 * A267934 A267935 A267936

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 22 2016

STATUS

approved

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Last modified May 9 15:34 EDT 2021. Contains 343742 sequences. (Running on oeis4.)