OFFSET
1,3
COMMENTS
Table starts
....1......1........1..........1...........1...........1...........1
....3......1.......10..........8..........35..........42.........130
....4.....12.......36........108.........324.........972........2916
...12.....16......212........788........4772.......23076......122628
...25....214.....2144......21466......217049.....2186741....22085009
...52....324.....9714.....142352.....2517024....42169152...714303376
..121...2960....92052....2870927....89130069..2775259622.86190450233
..261...6442...581575...30309632..1749889912.98973991195
..576..42656..4510937..463508815.47485981944
.1280.113575.31398740.5517128232
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..98
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +a(n-3) -2*a(n-4) +4*a(n-5) +a(n-6) -a(n-9)
k=2: [order 36]
Empirical for row n:
n=1: a(n) = a(n-1)
n=2: a(n) = 3*a(n-2) +2*a(n-3) +a(n-4) -a(n-5)
n=3: a(n) = 3*a(n-1)
n=4: a(n) = a(n-1) +16*a(n-2) +24*a(n-3) +16*a(n-4) +32*a(n-5) +32*a(n-6)
n=5: [order 39]
n=6: [order 10] for n>11
EXAMPLE
Some solutions for n=4 k=4
..5..6..7..8..9....5..6..7..4..9....5..6..7..8..9....5..2..7..8..9
..0.11..2.13.14...10.11.12.13.14...10.11..2.13..4....0.11.12..3..4
.22.16..1..4..3...22..0..1..2..3...22..0..1.14..3...22.16..1.18.19
.20.21.18.23.24...20.21..8.23.24...20.21.18.23.24...20.21..6.23.14
.15.10.17.12.19...15.16.17.18.19...15.16.17.12.19...15.10.17.24.13
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 14 2015
STATUS
approved