A072584 a(n) = A000040(A072583(n)).

3, 7, 23, 29, 31, 37, 43, 47, 59, 61, 103, 109, 137, 149, 151, 163, 167, 173, 191, 199, 223, 233, 239, 241, 251, 257, 263, 307, 317, 359, 367, 379, 383, 431, 439, 443, 463, 467, 479, 499, 503, 509, 541, 557, 569, 599, 607, 613, 617, 631, 643, 653, 659, 673

Offset: 1

Author

Reinhard Zumkeller, Jun 23 2002

Keywords

• nonn
• base
• easy

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000040, A072439, A072580, A072581, A072582, A072583.

Programs

Mathematica

With[{m = 120}, Select[Transpose[{Range[m], Prime[Range[m]]}], Intersection @@ DigitCount[#, 2] == {} &]][[;; , 2]] (* Amiram Eldar, Jul 28 2025 *)