OFFSET
1,13
COMMENTS
Table starts
.1.1..1..1...1...1...1....1....1.....1.....1......1......1.......1.......1
.1.1..1..1...1...1...1....1....1.....1.....1......1......1.......1.......1
.1.1..2..3...4...5...7...10...14....19....26.....36.....50......69......95
.1.1..3..5...7..10..17...28...43....66...105....168....264.....413.....651
.1.1..4..7..11..18..34...59..100...174...309....538....930....1620....2835
.1.1..5.10..18..32..62..118..227...439...839...1592...3037....5823...11144
.1.1..7.17..34..62.148..347..786..1702..3761...8400..18843...41959...93233
.1.1.10.28..59.118.347..960.2418..5862.15035..39090.100159..253642..646112
.1.1.14.43.100.227.786.2418.6802.18758.55226.162010.467274.1341081.3887275
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..449
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = a(n-1)
k=3: a(n) = a(n-1) +a(n-4)
k=4: a(n) = a(n-1) +2*a(n-4) +a(n-7)
k=5: a(n) = a(n-1) +3*a(n-4) +a(n-6) +3*a(n-7) +a(n-10)
k=6: a(n) = a(n-1) +4*a(n-4) +a(n-5) +3*a(n-6) +6*a(n-7) +2*a(n-9) +4*a(n-10) +a(n-13)
EXAMPLE
Some solutions for n=7 k=4
..0..0..0..0. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..1..1
..0..0..0..0. .0..1..1..1. .0..0..0..0. .0..1..1..0. .0..1..1..1
..0..0..0..0. .0..1..1..0. .0..0..0..0. .1..1..1..0. .0..1..1..0
..0..0..0..0. .0..0..0..0. .0..0..1..1. .1..1..0..0. .0..0..0..0
..0..1..1..0. .0..0..1..1. .0..1..1..1. .0..0..1..1. .0..1..1..0
..1..1..1..0. .0..1..1..1. .0..1..1..0. .0..1..1..1. .1..1..1..0
..1..1..0..0. .0..1..1..0. .0..0..0..0. .0..1..1..0. .1..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 15 2017
STATUS
approved