OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
EXAMPLE
a(1)=2 because 12 = 1+3+4+6-2, the 2 is subtracted. a(6)=6 because 42 = 1+2+3+7+14+21-6, the 6 is subtracted.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Aug 10 2005
STATUS
approved