OFFSET
1,1
EXAMPLE
Triangle begins:
1: 3
2: 5,13
3: 19,23,31
4: 37,41,53,61
5: 67,71,79,83,103
CROSSREFS
KEYWORD
AUTHOR
Giovanni Teofilatto, Jun 20 2005
EXTENSIONS
Edited and extended by Ray Chandler, Jun 27 2005
STATUS
approved