OFFSET
1,1
COMMENTS
Table starts
....2.........4.............11...................31........................89
....4........38............496.................6731.....................93378
...11.......496..........34334..............2332320.................161833750
...31......6731........2332320............787486033..............271477636708
...89.....93378......161833750.........271477636708...........466607833464165
..253...1302087....11300297029.......94234480080401........808208250265441905
..748..18221996...790807552035....32785038500076147....1403458538939419648545
.2214.255080336.55354924698596.11408914805662871537.2437738823003642650564362
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..84
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-1) +3*a(n-2) -9*a(n-3) +3*a(n-6) -9*a(n-7) -9*a(n-8) +27*a(n-9)
k=2: [order 51]
EXAMPLE
Some solutions for n=3 k=4
..0..3..0..0..3....1..3..1..2..0....0..1..3..3..1....0..3..4..0..2
..1..4..0..1..4....0..3..3..0..0....1..4..0..1..4....0..0..1..2..1
..0..0..0..0..0....0..0..1..2..1....0..1..2..1..0....0..0..3..4..4
..2..2..0..2..2....1..0..2..1..4....2..4..2..0..0....0..3..0..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 16 2015
STATUS
approved