Primes p such that p$ - 1 is also prime. Here '$' denotes the swinging factorial function (A056040).

A163080

Primes p such that p$ - 1 is also prime. Here '$' denotes the swinging factorial function (A056040).

Terms

    a(0) =3a(1) =5a(2) =7a(3) =13a(4) =41a(5) =47a(6) =83a(7) =137a(8) =151a(9) =229a(10) =317a(11) =389a(12) =1063a(13) =2371a(14) =6101a(15) =7873a(16) =13007a(17) =19603

External references