OFFSET
1,1
COMMENTS
Table starts
....2.......4..........8............16................32...................64
....5......23........105...........478..............2165.................9811
...12.....129.......1337.........13977............144762..............1504399
...28.....698......16449........394509...........9340070............222457036
...66....3805.....205969......11334364.........614216271..........33522573911
..156...20818....2590704.....326882784.......40566958960........5072216819342
..368..113774...32507376....9402398952.....2671846338458......765206237815409
..868..621754..408000104..270516990628...176044655676921...115478426410506313
.2048.3399032.5124790809.7789048968124.11610439554314901.17442858177037612521
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +2*a(n-3)
k=2: [order 16]
k=3: [order 64]
Empirical for row n:
n=1: a(n) = 2*a(n-1)
n=2: a(n) = 3*a(n-1) +12*a(n-2) -18*a(n-3) -29*a(n-4) +19*a(n-5) +38*a(n-6) +8*a(n-7)
n=3: [order 25]
n=4: [order 91]
EXAMPLE
Some solutions for n=3 k=4
..0..0..3..3....3..1..0..0....0..3..3..1....0..0..3..3....3..3..1..3
..0..0..0..2....0..0..3..3....3..3..0..2....3..3..0..2....0..3..2..0
..0..0..0..2....3..1..3..2....2..2..3..2....0..0..3..1....0..2..2..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 17 2014
STATUS
approved