OFFSET
1,3
COMMENTS
Table starts
.0.0........0...........0.............0...............0................0
.6.0.......36..........36............96.............120..............204
.0.0......312........1716..........8148...........23448............67788
.0.0.....8808......171576.......1728288........13177740.........70129212
.0.0...443088....46957788....1008327378.....25162747992.....271906503420
.0.0.44168712.38923001616.1749723617976.176610474548304.4288332432901128
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..112
FORMULA
Empirical for row n:
n=2: a(n) = 2*a(n-1) -2*a(n-3) +a(n-4) for n>5
n=3: [order 10] for n>17
n=4: [order 18] for n>33
Empirical quasipolynomials for row n:
n=2: polynomial of degree 2 plus a quasipolynomial of degree 0 with period 2 for n>1
n=3: polynomial of degree 5 plus a quasipolynomial of degree 3 with period 2 for n>7
n=4: polynomial of degree 9 plus a quasipolynomial of degree 7 with period 2 for n>15
EXAMPLE
Some solutions for n=4 k=4
.....0........0........4........0........0........0........2........3
....0.4......0.1......0.4......0.0......0.0......0.1......0.1......1.1
...0.4.4....3.1.3....1.3.3....4.4.2....0.0.0....0.0.3....0.0.0....1.3.1
..0.0.0.3..1.3.3.4..3.1.1.3..2.0.4.3..0.1.4.2..4.0.1.3..0.4.4.0..0.0.1.3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 20 2016
STATUS
approved