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.....1399......5513......21642........85000
...8....88....357....1618.....7667.....36182.....170056.......800122
..16...298...1399....7667....45287....262230....1511085......8755520
..32..1012...5513...36182...262230...1870946...13239850.....94146701
..64..3440..21642..170056..1511085..13239850..114730926....998177623
.128.11700..85000..800122..8755520..94146701..998177623..10637570858
.256.39804.333982.3767186.50742998.670385042.8712117357.113877789805
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>65
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..0. .0..0..0..0. .0..0..0..1. .0..1..1..1. .0..0..0..0
..1..1..1..1. .0..0..0..0. .0..0..0..1. .0..1..1..1. .0..0..0..0
..1..1..1..1. .0..0..0..0. .0..0..0..1. .0..1..1..1. .1..1..1..1
..1..1..1..1. .1..1..1..1. .1..1..1..1. .0..1..1..1. .1..1..1..1
..1..1..1..1. .0..0..0..1. .0..1..0..1. .0..1..1..1. .1..1..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 07 2018
STATUS
approved