OFFSET
1,3
EXAMPLE
Triangle begins:
n ........ Pair
1 ..........0
2 ........ 1,3
3 ....... 1,0,5
4 ...... 0,3,5,0
5 ..... 0,3,0,7,0
6 .... 0,0,5,7,0,0
CROSSREFS
KEYWORD
AUTHOR
Omar E. Pol, Jan 25 2009
STATUS
approved