Le 4 nov. 2016 22:23, Zak Seidov: > > Primes such that a(n)+1 is not multiple of a(k<n)+1: > 2,3,13,37,61,73,109,157,193,229,241,277, > 313,337,373,397,409,421,457,541,... See A082539 ! M.