OFFSET
1,5
COMMENTS
All columns are multiplicative.
FORMULA
T(n,k) = Sum_{d|k} A316564(n, d).
Conjecture: T(p,p) = p^2 for p prime.
EXAMPLE
Array begins:
================================================
n\k | 1 2 3 4 5 6 7 8 9 10
------+-----------------------------------------
1 | 1 1 1 1 1 1 1 1 1 1 ...
2 | 1 4 3 4 1 6 1 4 3 4 ...
3 | 1 2 9 8 1 18 1 8 9 2 ...
4 | 1 8 9 32 1 24 1 32 9 8 ...
5 | 1 2 21 32 25 42 1 32 21 50 ...
6 | 1 8 27 32 1 108 1 32 27 8 ...
7 | 1 2 57 44 1 114 49 128 57 2 ...
8 | 1 16 33 160 1 144 1 256 33 16 ...
9 | 1 2 99 56 1 198 1 56 243 2 ...
10 | 1 8 63 128 25 252 1 128 63 200 ...
11 | 1 2 111 112 265 222 1 112 111 530 ...
12 | 1 16 81 256 1 432 1 256 81 16 ...
13 | 1 2 183 184 1 366 469 184 183 2 ...
14 | 1 8 171 176 1 684 49 512 171 8 ...
15 | 1 4 189 256 25 756 1 256 189 100 ...
...
CROSSREFS
KEYWORD
AUTHOR
Andrew Howroyd, Jul 07 2018
STATUS
approved