OFFSET
1,2
COMMENTS
The sum of row n is A024916(n), the sum of all divisors of all positive integers <= n.
Row n has length A000196(n).
Column 1 is A034856.
Column 2 lists the elements of A155212 repeated.
Column 3 lists the elements of A051938 repeated with three copies of every element.
Column k contains k copies of every element.
EXAMPLE
Triangle begins:
1;
4;
8;
13, 2;
19, 2;
26, 7;
34, 7;
43, 13;
53, 13, 3;
64, 20, 3;
76, 20, 3;
89, 28, 10;
103, 28, 10;
118, 37, 10;
134, 37, 18;
151, 47, 18, 4;
169, 47, 18, 4;
188, 58, 27, 4;
208, 58, 27, 4;
229, 70, 27, 13;
251, 70, 37, 13;
274, 83, 37, 13;
298, 83, 37, 13;
323, 97, 48, 23;
349, 97, 48, 23, 5;
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Feb 08 2014
STATUS
approved