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 A163075 Primes of the form n\$ + 1. Here '\$' denotes the swinging factorial function (A056040). 4
 2, 3, 7, 31, 71, 631, 3433, 51481, 2704157, 280816201, 4808643121, 35345263801, 2104098963721, 94684453367401, 1580132580471901, 483701705079089804581 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES Peter Luschny, "Divide, swing and conquer the factorial and the lcm{1,2,...,n}", preprint, April 2008. LINKS Peter Luschny, Swinging Primes. EXAMPLE Since 3\$ = 4\$ = 6 the prime 7 is listed, however only once. MAPLE a := proc(n) select(isprime, map(x -> A056040(x)+1, [\$1..n])) end: MATHEMATICA Reap[Do[f = n!/Quotient[n, 2]!^2; If[PrimeQ[p = f + 1], Sow[p]], {n, 1, 70}]][[2, 1]] // Union (* Jean-François Alcover, Jun 28 2013 *) CROSSREFS Cf. A163077 (arguments n), A163074, A163076, A088332. Sequence in context: A008840 A268477 A156313 * A265113 A228171 A089359 Adjacent sequences:  A163072 A163073 A163074 * A163076 A163077 A163078 KEYWORD nonn AUTHOR Peter Luschny, Jul 21 2009 STATUS approved

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Last modified December 13 17:33 EST 2018. Contains 318086 sequences. (Running on oeis4.)