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 A163081 Primes of the form p\$ + 1 where p is prime, where '\$' denotes the swinging factorial (A056040). 1
 3, 7, 31, 4808643121, 483701705079089804581, 3283733939424401442167506310317720418331001 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The values of p are 2, 3, 5, 31, 67, 139 which is A163079. Subsequence of A163075 (primes of the form k\$ + 1). LINKS Jinyuan Wang, Table of n, a(n) for n = 1..7 Peter Luschny, Die schwingende Fakultät und Orbitalsysteme, August 2011. Peter Luschny, Swinging Primes. EXAMPLE 3 and 3\$ + 1 = 7 are prime, so 7 is a member. MAPLE a := proc(n) select(isprime, [\$2..n]); select(isprime, map(x -> A056040(x)+1, %)) end: CROSSREFS Cf. A056040, A103319, A163074-A163083. Sequence in context: A263049 A167917 A249761 * A332386 A096239 A074699 Adjacent sequences: A163078 A163079 A163080 * A163082 A163083 A163084 KEYWORD nonn AUTHOR Peter Luschny, Jul 21 2009 STATUS approved

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Last modified February 23 00:50 EST 2024. Contains 370265 sequences. (Running on oeis4.)