OFFSET
1,1
COMMENTS
Table starts
.......6..........24............117.............456.............1962
......20.........200...........2826...........26980...........308268
.....120........4800.........330642........12302880........604821816
.....536.......74504.......21965901......2762855184.....511886372927
....3378.....1918704.....2810374281...1404000132960.1141703959781484
...17362....37050508...252313355237.461069929040798
..108534...946850616.32063498387856
..597935.20113935465
.3721248
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..50
EXAMPLE
Some solutions for n=3 k=4
..0..0..2..0..2....0..0..2..1..0....0..0..0..1..2....1..2..2..1..3
..0..0..0..2..1....2..0..0..2..2....0..0..0..2..3....0..0..0..2..1
..3..1..3..3..3....2..0..3..1..2....2..2..1..3..2....2..3..2..3..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved