OFFSET
1,1
EXAMPLE
a(3)=300 because 2+3+5=10 and 2*3*5=30 and 10*30=300.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Enoch Haga, May 15 2000
EXTENSIONS
Offset corrected by Sean A. Irvine, Mar 02 2022
STATUS
approved