OFFSET
1,2
COMMENTS
Table starts
.1....2.......4........8.........16............32..............64
.1....4......16.......48........144...........432............1296
.1....8......64......288.......1296..........6480...........32400
.1...16.....256.....1728......11664.........97200..........810000
.1...32....1024....10368.....104976.......1458000........20250000
.1...64....4096....62208.....944784......21870000.......506250000
.1..128...16384...373248....8503056.....328050000.....12656250000
.1..256...65536..2239488...76527504....4920750000....316406250000
.1..512..262144.13436928..688747536...73811250000...7910156250000
.1.1024.1048576.80621568.6198727824.1107168750000.197753906250000
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..479
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 2*a(n-1)
k=3: a(n) = 4*a(n-1)
k=4: a(n) = 6*a(n-1)
k=5: a(n) = 9*a(n-1)
k=6: a(n) = 15*a(n-1) for n>2
k=7: a(n) = 25*a(n-1) for n>2
Empirical for row n:
n=1: a(n) = 2*a(n-1)
n=2: a(n) = 3*a(n-1) for n>3
n=3: a(n) = 5*a(n-1) for n>5
n=4: a(n) = 8*a(n-1) for n>7
n=5: a(n) = 13*a(n-1) for n>9
n=6: a(n) = 21*a(n-1) for n>11
n=7: a(n) = 34*a(n-1) for n>13
EXAMPLE
Some solutions for n=4 k=4
..7..8..9..3..4....0..8..2..3..4....0..1..2..3..4....0..1..9..3..4
..5..6..0..1..2...12.13.14..1..9...12..6..7..8..9....5..6..7..8..2
.17.18.12.13.14...10.11..5..6..7...10.18..5.13.14...10.18.19.13.14
.15.16.10.11.19...22.16.17.18.19...22.23.24.11.19...15.16.17.11.12
.20.21.22.23.24...20.21.15.23.24...20.21.15.16.17...20.21.22.23.24
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 31 2015
STATUS
approved