OFFSET
1,2
COMMENTS
Row sums = A064987, n*sigma(n): (1, 6, 12, 28, 30, 72, 56,...).
EXAMPLE
First few rows of the triangle =
1;
4, 2;
9, 0, 3;
16, 8, 0, 4;
25, 0, 0, 0, 5;
36, 18, 12, 0, 0, 6;
49, 0, 0, 0, 0, 0, 7;
64, 32, 0, 16, 0, 0, 0, 8;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Aug 06 2008
STATUS
approved