OFFSET
1,1
COMMENTS
Table starts
.......4..........16............50............130.............296
......16.........160...........984...........4580...........17723
......64........1600.........13683..........84132..........442089
.....256.......16000........186516........1334973.........8073038
....1024......160000.......2596992.......21348990.......137489538
....4096.....1600000......37128051......356222482......2425304290
...16384....16000000.....537465766.....6172817040.....45275725025
...65536...160000000....7804602744...109166159263....883012703273
..262144..1600000000..113382138975..1947747629183..17667432461262
.1048576.16000000000.1646661944858.34864494529806.358042017265316
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..199
FORMULA
Empirical: columns k=1..4 have recurrences of order 1,1,25,52 for n>0,0,26,59
Empirical: rows n=1..6 are polynomials of degree 6*n for k>0,0,3,7,11,15
EXAMPLE
Some solutions for n=3 k=4
..0..2..2..1....3..0..0..0....0..0..3..2....3..2..1..1....0..1..1..1
..2..2..2..0....1..2..3..0....3..3..2..0....3..2..2..2....1..2..3..0
..3..2..2..1....3..3..2..2....3..3..3..2....2..3..2..2....3..3..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Apr 02 2013
STATUS
approved