A249505 Primes p such that p+1 is a totient (i.e., in A000010).

3, 5, 7, 11, 17, 19, 23, 29, 31, 41, 43, 47, 53, 59, 71, 79, 83, 101, 103, 107, 109, 127, 131, 137, 139, 149, 163, 167, 179, 191, 197, 199, 211, 223, 227, 239, 251, 263, 269, 271, 281, 293, 311, 331, 347, 359, 367, 379, 383, 419, 431, 439, 443, 461, 463, 467, 479, 491, 499, 503

Offset

1,1

Comments

Primes of the form phi(m) - 1 for some m. A001359 is a subsequence. - Thomas Ordowski, Aug 10 2017

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Prog

(PARI) select(p->istotient(p+1), primes(200))

Crossrefs

Cf. A000010, A078892.

Sequence in context: A144574 A082373 A116959 * A091305 A164319 A085498

Adjacent sequences: A249502 A249503 A249504 * A249506 A249507 A249508

Keyword

nonn

Author

Joerg Arndt, Oct 30 2014

Status

approved