OFFSET
1,2
COMMENTS
Table starts
...1.....2......4.......8.......16........32..........64..........128
...2.....8.....26......88......298......1012........3440........11700
...4....26.....93.....357.....1401......5533.......21764........85620
...8....88....357....1626.....7770.....36968......175258.......831558
..16...298...1401....7770....46799....276154.....1620056......9548178
..32..1012...5533...36968...276154...2030211....14789406....108058244
..64..3440..21764..175258..1620056..14789406...133388471...1204666013
.128.11700..85620..831558..9548178.108058244..1204666013..13452150161
.256.39804.336966.3948404.56314168.790761211.10910971094.150810121407
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)
k=2: a(n) = 4*a(n-1) -2*a(n-2) +2*a(n-3) -6*a(n-4) -4*a(n-5)
k=3: [order 16] for n>18
k=4: [order 64] for n>66
EXAMPLE
Some solutions for n=5, k=4
..0..1..0..0. .0..1..0..0. .0..0..1..0. .0..0..1..0. .0..1..1..1
..0..1..0..1. .0..1..0..1. .1..0..1..0. .0..1..0..1. .0..0..1..0
..1..1..0..1. .0..1..0..1. .1..0..1..0. .1..1..0..1. .1..1..0..1
..1..0..0..1. .0..1..1..1. .1..0..0..1. .0..1..0..1. .0..1..0..1
..0..1..1..0. .0..0..1..0. .1..1..1..1. .0..1..0..0. .0..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 20 2018
STATUS
approved