OFFSET
1,2
COMMENTS
Table starts
...1...2...4...8..16...32...64..128..256..512.1024..2048..4096..8192.16384
...2...6..10..20..42...89..190..407..873.1874.4024..8642.18561.39866.85627
...4..10..16..28..52..100..196..388..772.1540.3076..6148.12292.24580.49156
...8..20..28..43..72..127..232..432..813.1539.2922..5557.10577.20141.38362
..16..42..52..72.109..177..302..532..955.1733.3164..5796.10637.19541.35918
..32..89.100.127.177..266..425..709.1217.2126.3753..6666.11882.21223.37952
..64.190.196.232.302..425..639.1012.1663.2801.4792..8278.14385.25088.43852
.128.407.388.432.532..709.1012.1529.2413.3927.6524.10984.18651.31842.54552
.256.873.772.813.955.1217.1663.2413.3674.5798.9381.15434.25672.43007.72386
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..1300
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 2*a(n-1) +a(n-2) -a(n-3) -a(n-4) for n>6
k=3: a(n) = 3*a(n-1) -2*a(n-2) for n>3
k=4: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4) +a(n-5) for n>6
k=5: a(n) = 2*a(n-1) -a(n-4) for n>6
k=6: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4) +a(n-7) for n>10
k=7: a(n) = 3*a(n-1) -2*a(n-2) -a(n-4) +a(n-5) -a(n-6) +a(n-7) for n>11
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..1. .0..1..1..0
..1..1..1..1. .0..0..0..0. .0..0..0..0. .0..0..1..1. .1..1..0..0
..1..1..1..1. .0..0..0..0. .0..0..0..0. .0..1..1..1. .1..0..0..0
..1..1..1..1. .0..0..0..0. .0..0..0..0. .1..1..1..1. .0..0..0..0
..0..0..0..0. .1..1..1..1. .0..0..0..1. .0..0..0..0. .0..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Aug 06 2018
STATUS
approved