OFFSET
1,2
COMMENTS
Table starts
.....1......2.......4........12..........33...........102............329
.....2......5......16........51.........180...........685...........2735
.....4.....16......69.......314........1588..........8664..........48485
....12.....51.....314......2190.......15384........115303.........875548
....33....180....1588.....15384......151357.......1570792.......16473680
...102....685....8664....115303.....1570792......22223936......323672993
...329...2735...48485....875548....16473680.....323672993.....6484084119
..1075..11243..278067...6891052...177642195....4805725804...132637022443
..3622..47120.1614600..54253511..1920518549...71571627525..2720040353857
.12298.199945.9457286.432215971.20952334810.1071735830464.56182108648915
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..143
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-1) +5*a(n-2) -5*a(n-3) -24*a(n-4) -2*a(n-5) +15*a(n-6) +9*a(n-7)
k=2: [order 13] for n>14
k=3: [order 29] for n>31
k=4: [order 79] for n>83
EXAMPLE
Some solutions for n=4 k=4
..0..0..1..2..2....0..0..1..2..2....0..0..1..1..1....0..0..1..1..2
..0..1..1..2..2....0..1..1..2..3....0..0..1..1..1....0..1..1..2..2
..1..1..3..3..2....1..1..2..3..3....0..1..1..1..1....1..1..1..2..3
..3..3..3..3..2....1..2..2..3..3....1..1..1..1..2....1..1..2..3..3
..3..3..3..2..2....2..2..2..3..3....1..1..1..2..2....1..2..2..3..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 08 2013
STATUS
approved