OFFSET
1,2
COMMENTS
Table starts
...1.....2......4........8........16..........32...........64............128
...2.....8.....26.......88.......298........1012.........3440..........11700
...4....26.....95......375......1524........6170........24838.........100272
...8....88....375.....1998.....11733.......64703.......358219........2010841
..16...298...1524....11733....115279......915181......7443583.......65049552
..32..1012...6170....64703....915181.....9822603....109073249.....1317338135
..64..3440..24838...358219...7443583...109073249...1686794332....28696396155
.128.11700.100272..2010841..65049552..1317338135..28696396155...723176599097
.256.39804.405068.11248655.548247606.15245980679.463029637815.16724897634952
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 18] for n>19
k=4: [order 65] for n>66
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..1. .0..1..1..0. .0..1..1..1. .0..0..0..1. .0..0..0..0
..0..1..0..0. .0..0..0..0. .1..0..0..1. .1..0..1..0. .1..1..0..1
..0..0..1..1. .1..1..1..1. .1..0..1..0. .1..0..0..0. .1..0..1..0
..0..1..0..0. .0..1..0..0. .0..1..1..0. .1..1..0..1. .0..1..1..1
..0..1..1..1. .1..1..0..1. .1..0..1..0. .0..0..0..0. .1..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 18 2018
STATUS
approved