OFFSET
1,10
EXAMPLE
The triangle starts in row n=1 with columns 1<=k<=n as:
0;
0,1;
0,0,1;
0,1,1,3;
0,0,0,2,1;
0,0,0,0,2,0;
0,0,2,0,3,2,1;
MATHEMATICA
Flatten[Table[Mod[DivisorSigma[1, n], k], {n, 20}, {k, n}]] (* Harvey P. Dale, Apr 17 2014 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Juri-Stepan Gerasimov, Nov 28 2010
STATUS
approved