OFFSET
1,1
COMMENTS
Table starts
.......4.........10...........20............35.............56.............84
......16.........85..........295...........805...........1876...........3906
......64........707.........3471.........12311..........36028..........92734
.....256.......5864........41006........176893.........594286........1718057
....1024......48620.......485714.......2575955........9779558.......30643468
....4096.....403104......5777663......37844037......163752797......556027700
...16384....3342081.....68892600.....559416917.....2772658693....10269723035
...65536...27708726....822141033....8299429418....47273211674...191829887779
..262144..229729153...9813968785..123370738379...809416786834..3609049327918
.1048576.1904652103.117159879996.1835707326614.13894273785956.68212899813271
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..287
FORMULA
Empirical: columns k=1..5 have recurrences of order 1,4,13,34,63 for n>0,0,0,36,68
Empirical rows n=1..7 are polynomials of order 3*n for k>0,0,2,5,8,11,14
EXAMPLE
Some solutions for n=3 k=4
..1..2..2..3....1..2..2..2....0..0..2..2....0..0..1..1....0..1..1..3
..0..2..2..2....1..3..3..3....1..3..3..3....1..2..2..2....0..1..1..1
..0..0..3..3....0..2..3..3....0..3..3..3....1..2..3..3....1..1..2..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 29 2013
STATUS
approved