OFFSET
1,5
COMMENTS
Table starts
.0.........0............1................2.................8.................28
.0.........2...........46..............394..............3102..............22342
.0........28.........1266............21734............350818............5192104
.0.......304........27144...........953236..........31906806..........977717308
.0......2976.......521848.........37854870........2628860468.......166805996158
.0.....27488......9439296.......1420883314......204635003232.....26899223667928
.0....244544....164206368......51413566384....15351923549506...4181821443113978
.0...2119168...2780073856....1813061036754..1122266386967854.633606104886468360
.0..18011136..46137121152...62727044483806.80481356765998482
.0.150809088.754039756800.2138467742923228
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..97
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 16*a(n-1) -72*a(n-2) +64*a(n-3) -16*a(n-4)
k=3: a(n) = 28*a(n-1) -180*a(n-2) -224*a(n-3) -64*a(n-4) for n>5
k=4: [order 8] for n>9
k=5: [order 16] for n>18
Empirical for row n:
n=1: a(n) = 4*a(n-1) -8*a(n-3) -4*a(n-4) for n>7
n=2: [order 10] for n>11
n=3: [order 36] for n>39
EXAMPLE
Some solutions for n=3 k=4
..0..1..2..2. .0..0..1..2. .0..1..2..1. .0..1..0..2. .0..1..2..1
..2..1..1..0. .1..0..1..1. .1..0..1..1. .0..0..2..0. .2..0..0..1
..2..1..2..2. .2..0..0..0. .0..1..2..0. .2..1..2..2. .2..0..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 20 2017
STATUS
approved