OFFSET
1,2
COMMENTS
Table starts
...0......10.....2........26.......20...........70..........90.............210
...2......34....12.......152......108..........690.........744............3232
...4.....124....42.......996......606.........8104........7568...........66744
...6.....456...122......6406.....3002........93236.......68072.........1364998
..10....1686...332.....41328....14398......1079300......595304........28339640
..18....6232...882....266490....66950.....12486510.....5045772.......589476500
..32...23034..2322...1718514...306022....144506106....41969054.....12273587770
..56...85130..6092..11082034..1382638...1672314806...344123498....255585490674
..98..314626.15962..71463916..6200520..19353375198..2791211292...5322596390316
.172.1162804.41802.460844060.27671244.223972627480.22459482618.110844512072980
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..477
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) -a(n-2) +a(n-3)
k=2: a(n) = 4*a(n-1) -a(n-2) -a(n-3) +2*a(n-4)
k=3: a(n) = 4*a(n-1) -4*a(n-2) +a(n-3)
k=4: a(n) = 5*a(n-1) +9*a(n-2) +2*a(n-3) +a(n-4) +2*a(n-5)
k=5: [order 14]
k=6: [order 23] for n>27
k=7: [order 44] for n>45
Empirical for row n:
n=1: a(n) = -a(n-1) +2*a(n-2) +4*a(n-3) +3*a(n-4) +a(n-5)
n=2: [order 9] for n>10
n=3: [order 24] for n>26
n=4: [order 49] for n>54
EXAMPLE
Some solutions for n=5 k=4
..2..1..2..1..0....2..1..2..1..0....2..1..0..1..2....0..1..2..1..0
..0..1..2..1..0....0..1..0..1..2....2..1..0..1..2....2..1..0..1..2
..2..1..2..1..2....0..1..2..1..2....0..1..2..1..0....0..1..2..1..2
..0..1..2..1..0....0..1..0..1..2....2..1..0..1..2....0..1..0..1..0
..2..1..2..1..2....0..1..0..1..0....0..1..0..1..0....0..1..2..1..2
..0..1..0..1..0....2..1..2..1..2....2..1..2..1..0....2..1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 26 2013
STATUS
approved