1,1

Primes in A039649.

All primes are in the sequence.

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Select[Table[EulerPhi[n]+1, {n, 1, 1000}], PrimeQ]

Cf. A000010, A039698 (associated n), A214287.

Sequence in context: A069974 A039650 A039649 * A253554 A252463 A113605

Adjacent sequences: A214285 A214286 A214287 * A214289 A214290 A214291

nonn,easy

Vincenzo Librandi, Jul 13 2012

approved