OFFSET
0,2
COMMENTS
Array A210489 (without first row) read downwards antidiagonals. - R. J. Mathar, Sep 17 2013
FORMULA
EXAMPLE
First few rows of the triangle are:
1;
3, 1;
5, 4, 1;
7, 8, 5, 1;
9, 12, 12, 6, 1;
11, 16, 20, 17, 7, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Mar 20 2005
STATUS
approved