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A251120 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column 7
256, 2500, 2500, 22500, 64660, 22500, 173056, 1494029, 1494029, 173056, 1252161, 27945953, 86208566, 27945953, 1252161, 8444836, 480842776, 3816838692, 3816838692, 480842776, 8444836, 54700816, 7521121248, 152303295344 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......256.........2500...........22500.............173056...............1252161

.....2500........64660.........1494029...........27945953.............480842776

....22500......1494029........86208566.........3816838692..........152303295344

...173056.....27945953......3816838692.......384534346812........34305606524366

..1252161....480842776....152303295344.....34305606524366......6735269828703846

..8444836...7521121248...5387348466660...2665290749762401...1132975802012504908

.54700816.111353209662.177938935415798.191258469961340217.174360788514275098552

LINKS

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

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 26]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A016780 A236041 A236037 * A251114 A205181 A205277

Adjacent sequences:  A251117 A251118 A251119 * A251121 A251122 A251123

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Nov 30 2014

STATUS

approved

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Last modified April 16 18:53 EDT 2021. Contains 343050 sequences. (Running on oeis4.)