OFFSET
1,1
COMMENTS
Table starts
....2......4.........8...........16..............32................64
....4.....16........63..........249.............984..............3888
....8.....63.......419.........2968...........21055............148793
...16....249......2968........40024..........535494...........7114808
...32....984.....21055.......535494........13473987.........335154112
...64...3888....148793......7114808.......335154112.......15544631618
..128..15363...1052672.....94872444......8386104536......726938227646
..256..60705...7447859...1264480188....209686247202....33959500217027
..512.239868..52689903..16850046438...5240914986790..1585545530659659
.1024.947808.372763688.224565308124.131022200932324.74053519870574822
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 3*a(n-1) +3*a(n-2) +3*a(n-3)
k=3: [order 10]
k=4: [order 18]
k=5: [order 57]
EXAMPLE
Some solutions for n=4 k=4
..1..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..0..1. .0..0..0..0
..0..0..1..0. .0..0..1..0. .1..0..0..0. .1..0..0..0. .1..0..0..1
..1..0..1..1. .0..1..1..0. .1..0..1..1. .0..0..1..0. .1..1..0..1
..0..0..0..0. .1..0..1..1. .0..0..1..0. .1..1..0..1. .0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 11 2017
STATUS
approved