OFFSET
1,2
COMMENTS
Table starts
...1.....2......4.......8........16.........32...........64............128
...2.....8.....23......65.......192........569.........1709...........5162
...4....23.....82.....302......1164.......4561........17966..........70913
...8....65....302....1597......8598......46955.......258241........1422755
..16...192...1164....8598.....65099.....507378......3982123.......31333222
..32...569...4561...46955....507378....5694906.....64566869......734571604
..64..1709..17966..258241...3982123...64566869...1062867065....17593640188
.128..5162..70913.1422755..31333222..734571604..17593640188...424977120539
.256.15663.280153.7843425.246848528.8373046468.292154717629.10317078557668
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) = 3*a(n-1) +3*a(n-2) -6*a(n-3) -8*a(n-4) for n>5
k=3: [order 16]
k=4: [order 57] for n>59
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..1
..0..0..0..0. .0..1..1..1. .1..0..0..0. .0..0..0..1. .0..0..1..1
..0..0..1..1. .0..1..1..1. .0..0..1..1. .1..0..0..0. .0..0..0..1
..0..0..1..1. .1..0..1..1. .0..0..1..1. .1..1..0..0. .1..0..1..1
..1..0..0..0. .1..1..1..0. .0..0..0..0. .1..1..1..0. .0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jul 21 2018
STATUS
approved