OFFSET
1,2
EXAMPLE
Triangle begins
1 (1 deficient)
2 3 (2 deficient)
4 5 6 (2 deficient)
7 8 9 10 (4 deficient)
11 12 13 14 15 (4 deficient)
16 17 18 19 20 21 (4 deficient)
22 23 24 25 26 27 28 (5 deficient)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Jun 08 2003
STATUS
approved