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A223066 T(n,k)=Number of nXk 0..3 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope 4
4, 16, 16, 64, 44, 64, 256, 136, 136, 256, 1024, 452, 1632, 452, 1024, 4096, 1576, 6794, 6794, 1576, 4096, 16384, 5684, 131776, 19300, 131776, 5684, 16384, 65536, 21016, 713324, 480598, 480598, 713324, 21016, 65536, 262144, 79172, 16579616, 1776550 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......4......16.........64.......256.........1024.......4096........16384

......16......44........136.......452.........1576.......5684........21016

......64.....136.......1632......6794.......131776.....713324.....16579616

.....256.....452.......6794.....19300.......480598....1776550.....60959690

....1024....1576.....131776....480598....108007936..624501712.236336828768

....4096....5684.....713324...1776550....624501712.2396299856

...16384...21016...16579616..60959690.236336828768

...65536...79172..101534218.244824466

..262144..302536.2587754048

.1048576.1168724

.4194304

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..71

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Column 1 is A000302

Column 2 is A183634(n-1)

Sequence in context: A206838 A206900 A207290 * A339570 A223071 A232431

Adjacent sequences:  A223063 A223064 A223065 * A223067 A223068 A223069

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 13 2013

STATUS

approved

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Last modified May 26 01:21 EDT 2022. Contains 354073 sequences. (Running on oeis4.)