OFFSET
1,1
COMMENTS
Table starts
......2..........3.............4...............5.................6
.....10.........42...........120.............275...............546
....138.......3186.........32060..........199735............909900
...5314....1299735......74323976......1839121115.......26346319032
.575122.2860343784.1494988224948.214090209950060.13186531254708756
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..53
FORMULA
Empirical: rows n=1,2,3,4 are polynomials of degree 1,4,9,16
EXAMPLE
Some solutions for n=4 k=4
..0..1..1..0....4..0..0..0....1..3..0..0....3..0..1..0....4..0..0..0
..2..4..1..1....0..4..4..0....0..4..2..1....1..2..0..3....0..2..2..3
..0..1..2..4....0..3..4..2....0..1..0..1....0..3..1..2....0..0..1..2
..0..0..1..3....0..0..1..1....1..0..4..0....0..2..1..0....0..0..3..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jun 28 2012
STATUS
approved