OFFSET
1,2
COMMENTS
Table starts
...1.....2......4.......8.......16.........32..........64..........128
...2.....8.....23......65......192........569........1709.........5162
...4....23.....78.....271......982.......3619.......13454........50193
...8....65....271....1253.....5925......28597......139490.......684312
..16...192....982....5925....36585.....232633.....1494780......9661315
..32...569...3619...28597...232633....1962143....16731864....143845449
..64..1709..13454..139490..1494780...16731864...189577494...2170853960
.128..5162..50193..684312..9661315..143845449..2170853960..33224254530
.256.15663.187620.3366213.62645367.1242037097.24994758941.512094847931
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..1..0. .0..1..1..0. .0..1..0..1. .0..1..1..1. .0..1..1..1
..1..1..1..1. .1..1..0..1. .1..1..1..1. .1..0..1..1. .1..1..1..1
..0..1..1..0. .0..0..0..1. .1..0..1..0. .0..1..0..1. .1..1..1..0
..1..1..0..0. .0..0..1..1. .1..1..1..1. .0..1..0..0. .0..1..0..0
..1..1..1..0. .1..0..0..1. .1..0..1..1. .1..0..1..1. .1..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jun 26 2018
STATUS
approved