OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..75
MATHEMATICA
Select[Prime[Range[14000]], Mod[#+5, EulerPhi[#+5]]==0&] (* Harvey P. Dale, Jan 14 2022 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Feb 22 2002
STATUS
approved