OFFSET
1,2
EXAMPLE
Triangle begins:
{}
1
2
1 2
4
1 1 3
6
1 2 4
2 6
1 3 5
10
1 1 1 2 6
12
1 5 7
2 2 10
1 2 4 8
16
1 1 3 3 9
18
1 1 2 5 10
2 4 14
1 9 11
22
1 1 1 2 2 4 12
For example, the divisors of 18 are {1,2,3,6,9,18}, with differences {1,1,3,3,9}, which is row 18.
MATHEMATICA
Table[Sort[Differences[Divisors[n]]], {n, 30}]
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Gus Wiseman, Oct 02 2019
STATUS
approved