A163082 Primes of the form p$ - 1 where p is prime, where '$' denotes the swinging factorial (A056040).

5, 29, 139, 12011, 5651707681619, 386971244197199, 35257120210449712895193719, 815027488562171580969632861193966578650499

Offset

1,1

Comments

The first values of p are 3, 5, 7, 13, 41 from A163080. Subsequence of A163076 (primes of the form k$ - 1).

Links

Jinyuan Wang, Table of n, a(n) for n = 1..14

Peter Luschny, Die schwingende Fakultät und Orbitalsysteme, August 2011.

Peter Luschny, Swinging Primes.

Example

3 and 3$ - 1 = 5 are prime, so 5 is a member.

Maple

a := proc(n) select(isprime, [$2..n]); select(isprime, map(x -> A056040(x)-1, %)) end:

Crossrefs

Cf. A056040, A163074-A163083.

Sequence in context: A273027 A268957 A146053 * A189430 A273078 A060963

Adjacent sequences: A163079 A163080 A163081 * A163083 A163084 A163085

Keyword

nonn

Author

Peter Luschny, Jul 21 2009

Status

approved