OFFSET
0,2
COMMENTS
FORMULA
EXAMPLE
First few rows of the triangle:
1;
2, 4;
6, 9, 15;
20, 28, 40, 60;
75, 100, 135, 185, 260;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jan 27 2007
STATUS
approved