OFFSET
1,1
COMMENTS
Table starts
....3.....7.....13.......21.......31........43.........57..........73
....5....17.....43.......89......161.......265........407.........593
....9....42....143......378......837......1634.......2907........4818
...17...106....479.....1610.....4357.....10082......20771.......39154
...33...273...1616.....6877....22710.....62249.....148468......318261
...65...717...5492....29461...118530....384605....1061632.....2587557
..129..1918..18804...126591...619490...2377935....7594224....21042479
..257..5218..64869...545627..3242265..14712729...54345509...171161319
..513.14413.225483..2359152.16993552..91096234..389060724..1392571084
.1025.40349.789747.10233188.89197862.564452368.2786424182.11332701236
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..9999
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-1) -2*a(n-2)
k=2: a(n) = 7*a(n-1) -15*a(n-2) +7*a(n-3) +6*a(n-4)
k=3: a(n) = 13*a(n-1) -60*a(n-2) +105*a(n-3) -11*a(n-4) -94*a(n-5) -24*a(n-6)
k=4: [order 8]
k=5: [order 10]
k=6: [order 12]
k=7: [order 14]
Empirical for row n:
n=1: a(n) = n^2 + n + 1
n=2: a(n) = n^3 + n^2 + 2*n + 1
n=3: a(n) = n^4 + n^3 + 3*n^2 + 2*n + 2
n=4: a(n) = n^5 + n^4 + 4*n^3 + 3*n^2 + 6*n + 2
n=5: a(n) = n^6 + n^5 + 5*n^4 + 4*n^3 + 12*n^2 + 6*n + 5 for n>1
n=6: a(n) = n^7 + n^6 + 6*n^5 + 5*n^4 + 20*n^3 + 12*n^2 + 20*n + 5 for n>1
n=7: a(n) = n^8 + n^7 + 7*n^6 + 6*n^5 + 30*n^4 + 20*n^3 + 50*n^2 + 20*n + 15 for n>2
EXAMPLE
Some solutions for n=5 k=4
..0....4....1....2....0....3....2....1....0....1....4....1....1....1....3....2
..0....3....4....4....0....2....4....0....3....4....0....3....0....2....4....0
..4....4....0....0....4....3....3....0....2....1....4....4....4....3....0....0
..3....0....2....0....0....4....4....4....0....4....1....0....3....2....3....4
..1....0....3....1....2....0....1....3....3....0....0....3....1....3....0....3
..3....3....2....4....0....0....4....0....2....3....3....1....3....0....4....0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 29 2016
STATUS
approved