OFFSET
2,1
LINKS
Peter Kagey, Table of n, a(n) for n = 2..10012 (first 141 rows, flattened)
EXAMPLE
Table begins:
n\k| 1 2 3 4 5 6 7 8 9 10 11
---+-------------------------------------------------
2 | 2;
3 | 4, 2;
4 | 2, 6, 2;
5 | 8, 2, 8, 2;
6 | 2, 12, 2, 8, 2;
7 | 8, 2, 16, 2, 8, 2;
8 | 2, 18, 2, 20, 2, 8, 2;
9 | 8, 2, 24, 2, 20, 2, 8, 2;
10 | 2, 12, 2, 24, 2, 20, 2, 8, 2;
11 | 8, 2, 16, 2, 24, 2, 20, 2, 8, 2;
12 | 2, 12, 2, 20, 2, 24, 2, 20, 2, 8, 2.
For n=4 and k=2, the sequence x^4 - x^2 evaluated on the positive (equivalently, negative) integers is 0,12,72,240,600,1260,2352,4032,6480,9900,... and all terms are divisible by the following T(4,2) = 6 positive integers: 1, 2, 3, 4, 6, and 12.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Kagey, Dec 18 2019
STATUS
approved