OFFSET
1,2
COMMENTS
Table starts
...1.....2......4.......8.......16........32..........64..........128
...2.....8.....26......88......298......1012........3440........11700
...4....26.....92.....354.....1387......5470.......21484........84425
...8....88....354....1617.....7722.....36667......173524.......822065
..16...298...1387....7722....46456....273360.....1598956......9400094
..32..1012...5470...36667...273360...2001653....14514670....105596164
..64..3440..21484..173524..1598956..14514670...129999453...1166134994
.128.11700..84425..822065..9400094.105596164..1166134994..12899638332
.256.39804.331838.3897261.55296169.769538056.10493701031.143316205219
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 17] for n>19
k=4: [order 64] for n>66
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..1. .0..0..0..1. .0..0..0..1. .0..0..1..1. .0..1..1..1
..1..0..0..0. .0..1..1..1. .1..1..1..0. .1..1..1..0. .1..0..0..0
..0..1..0..0. .0..1..1..0. .1..1..1..1. .1..1..0..1. .0..0..0..0
..1..0..0..0. .0..1..1..1. .1..1..0..0. .1..1..1..1. .1..1..0..0
..0..0..1..1. .0..0..0..1. .0..0..1..0. .0..0..1..0. .1..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 02 2018
STATUS
approved