OFFSET
1,1
COMMENTS
Table starts
..2......9..........60............570.............6960...............104006
..4.....81........3600.........324900.........48441600..........10817248036
..6....576......178068......157322070.....292870561470......994136348047368
..9...3969.....8459154....73055876226.1699631089239529.87855957137937824257
.12..25281...376812420.32082001964881
.16.155236.16109362560
.20.915849
.25
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..40
EXAMPLE
Some solutions for n=3 k=4
..0..0..2..4....0..0..3..3....0..0..2..2....0..0..4..3....0..0..2..4
..0..1..3..1....0..0..1..0....0..1..0..3....0..1..4..2....0..1..3..2
..1..3..3..0....1..1..3..4....1..3..4..0....1..3..2..1....1..2..3..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 28 2016
STATUS
approved