|
Search: id:A163082
|
|
|
| A163082 |
|
Primes of the form p$ - 1 where p is prime. Here '$' denotes the swinging factorial function (A056040). |
|
+0
1
|
|
| 5, 29, 139, 12011, 5651707681619, 386971244197199, 35257120210449712895193719, 815027488562171580969632861193966578650499
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
The first values of p are 3, 5, 7, 13, 41 from A163080. Subsequence of A163076 (primes of the form n$ - 1).
|
|
REFERENCES
|
Peter Luschny, "Divide, swing and conquer the factorial and the lcm{1,2,...,n}", preprint, April 2008.
|
|
LINKS
|
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. A163074 through A163083.
Sequence in context: A000352 A034332 A146053 this_sequence A060963 A107002 A027864
Adjacent sequences: A163079 A163080 A163081 this_sequence A163083 A163084 A163085
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Peter Luschny (peter(AT)luschny.de), Jul 21 2009
|
|
|
Search completed in 0.002 seconds
|
