OFFSET
0,2
EXAMPLE
a(0)=1, a(1)=1+prime(1)=3, a(2)=1+prime(3)=6.
MATHEMATICA
NestList[1+Prime[#]&, 1, 16]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Zak Seidov, Apr 20 2015
EXTENSIONS
a(16)-a(17) from Jinyuan Wang, Jun 27 2020
STATUS
approved