OFFSET
1,2
COMMENTS
Table starts
...1....2...4....8...16...32....64...128....256....512....1024....2048....4096
...2....7..13...29...69..137...301...705...1461...3193....7373...15729...34405
...4...13..20...26...43...72...115...189....318....526.....874....1473....2482
...8...29..26...46..130..233...448...877...1605...3284....6774...13516...26780
..16...69..43..130..310..531..1112..2418...4870..10382...21883...45941...97484
..32..137..72..233..531.1002..1852..4200...9436..19203...41599...91092..197402
..64..301.115..448.1112.1852..4929.11412..24191..59037..137098..312216..728670
.128..705.189..877.2418.4200.11412.28917..66656.169277..416130..999147.2499437
.256.1461.318.1605.4870.9436.24191.66656.170693.444484.1173512.3002664.7845019
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..310
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1);
k=2: a(n) = 3*a(n-1) -2*a(n-2) +8*a(n-3) -20*a(n-4) +8*a(n-5) for n > 6;
k=3: [order 17] for n>19;
k=4: [order 67] for n>70.
EXAMPLE
Some solutions for n=7, k=7
..0..0..0..1..1..0..0. .0..0..0..1..1..0..0. .0..1..1..1..1..0..1
..1..1..1..1..1..1..1. .1..1..1..0..0..1..1. .1..1..1..0..1..0..1
..0..1..1..1..0..1..0. .0..0..0..0..1..0..1. .0..0..0..0..1..1..0
..0..1..1..1..0..0..1. .1..0..0..0..0..1..1. .1..0..0..0..1..1..1
..1..1..1..1..1..1..0. .1..0..0..0..1..1..1. .1..0..0..0..0..1..1
..1..1..0..0..0..1..1. .0..0..0..0..1..1..0. .1..0..1..1..1..1..0
..1..0..1..1..1..0..0. .1..1..1..0..1..0..1. .0..1..0..0..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 09 2018
STATUS
approved