OFFSET
1,1
COMMENTS
Table starts
....4........20..........108...........465...........2265.........10920
....0........72.........1817.........10720..........89472.......1791696
...16......1441........86633.......2604481......102742049....4952396901
....0.....13856......2940624.....226810352....24130893568.4071813326144
...64....189993....118376593...31702909989.11743850653769
....0...2215960...4465927225.3594130469760
..256..28027420.173624682220
....0.340646784
.1024
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..49
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-2)
k=2: [order 10]
k=3: [order 27]
k=4: [order 53]
Empirical for row n:
n=1: [linear recurrence of order 22]
EXAMPLE
Some solutions for n=3 k=4
..2..3..6..9..8....2..3..6..1..9....2..5..4..1..8....2..5..4..9..8
..7..0..1..4.14....7..0..5.12..4....7..0..3.14.13....7..0..1.13..3
..5.15.17.18.19...16.15..8.17.18....6.16.18.19..9...12..6.17.19.18
.10.12.11.16.13...10.11.19.13.14...11.10.15.12.17...11.10.15.16.14
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 30 2015
STATUS
approved