OFFSET
1,2
COMMENTS
Table starts
...1....2....4.....8....16.....32......64......128......256.......512
...2....4...12....24....64....184.....432.....1088.....2944......7360
...4...12...19....37....94....202.....428......965.....2134......4692
...8...24...37...110...297....869....2325.....6379....17568.....48401
..16...64...94...297...931...2870....8058....25040....76568....231646
..32..184..202...869..2870..11079...35462...133597...471114...1710896
..64..432..428..2325..8058..35462..132348...573938..2341508...9662652
.128.1088..965..6379.25040.133597..573938..2942145.13964485..67899747
.256.2944.2134.17568.76568.471114.2341508.13964485.77098563.429574178
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 2*a(n-1) +8*a(n-3) -8*a(n-4) -8*a(n-5) for n>6
k=3: [order 12] for n>13
k=4: [order 65] for n>67
EXAMPLE
Some solutions for n=5 k=4
..0..1..1..0. .0..0..1..1. .0..0..0..0. .0..1..1..1. .0..0..1..0
..0..1..1..0. .0..0..1..1. .0..0..0..1. .1..0..1..0. .0..0..0..1
..1..1..1..1. .0..1..1..1. .0..0..0..1. .0..0..0..1. .0..0..0..0
..1..1..1..1. .0..1..1..0. .1..0..0..0. .1..0..1..1. .1..0..0..0
..1..1..1..1. .1..1..1..0. .0..1..0..0. .1..0..1..1. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, May 13 2018
STATUS
approved