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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
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 13 2013
STATUS
approved