OFFSET
1,1
EXAMPLE
11
3 13
7 17 37
19 29 59 79
11 211 311 811 911
13 113 313 613 1013 1213
...
CROSSREFS
KEYWORD
AUTHOR
Amarnath Murthy, Sep 28 2003
EXTENSIONS
More terms from David Wasserman, Jul 27 2005
STATUS
approved