OFFSET
1,1
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = A108604(n) - 1. - Amiram Eldar, Sep 10 2023
MATHEMATICA
((# + 1)*(# + 3)) & /@ Select[Prime[Range[200]], PrimeQ[# + 2] &] (* Amiram Eldar, Sep 10 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 10 2023, following a suggestion from Jean-Claude Babois.
STATUS
approved