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A267974 T(n,k)=Number of nXk 0..3 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value. 9

%I #4 Jan 23 2016 10:01:49

%S 4,16,16,64,256,60,250,4096,3600,222,964,62500,216000,49284,804,3674,

%T 929296,12067722,10941048,646416,2872,13868,13498276,648144348,

%U 2208460532,519718464,8248384,10132,51917,192321424,33600202086

%N T(n,k)=Number of nXk 0..3 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

%C Table starts

%C ......4..........16.............64..............250................964

%C .....16.........256...........4096............62500.............929296

%C .....60........3600.........216000.........12067722..........648144348

%C ....222.......49284.......10941048.......2208460532.......422888259007

%C ....804......646416......519718464.....370962601314....247835569655956

%C ...2872.....8248384....23689358848...58977586280183.135605581008614210

%C ..10132...102657424..1040125019968.8920181825287255

%C ..35383..1251956689.44297983526887

%C .122480.15001350400

%C .420752

%H R. H. Hardin, <a href="/A267974/b267974.txt">Table of n, a(n) for n = 1..60</a>

%F Empirical for column k:

%F k=1: [linear recurrence of order 8]

%F k=2: [order 21]

%F k=3: [order 40]

%F Empirical for row n:

%F n=1: [linear recurrence of order 8]

%F n=2: [order 21]

%e Some solutions for n=2 k=4

%e ..2..3..1..0....1..3..0..0....0..0..2..0....3..0..2..2....1..0..3..2

%e ..3..0..3..2....3..0..3..0....2..2..2..0....2..1..2..0....0..0..1..0

%Y Column 1 is A267928.

%Y Column 2 is A267929.

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Jan 23 2016

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Last modified September 8 13:51 EDT 2024. Contains 375753 sequences. (Running on oeis4.)