OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Range[135], PrimeOmega[#^2 - # + 1] == 2 &] (* Amiram Eldar, Dec 23 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Sep 19 2010
STATUS
approved