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A163082 Primes of the form p$ - 1 where p is prime, where '$' denotes the swinging factorial (A056040). 1
5, 29, 139, 12011, 5651707681619, 386971244197199, 35257120210449712895193719, 815027488562171580969632861193966578650499 (list; graph; refs; listen; history; text; internal format)
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 Fakult├Ąt 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

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Last modified July 8 16:12 EDT 2020. Contains 335524 sequences. (Running on oeis4.)