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A163075
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Primes of the form n$ + 1. Here '$' denotes the swinging factorial function (A056040).
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4
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2, 3, 7, 31, 71, 631, 3433, 51481, 2704157, 280816201, 4808643121, 35345263801, 2104098963721, 94684453367401, 1580132580471901, 483701705079089804581
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Peter Luschny, "Divide, swing and conquer the factorial and the lcm{1,2,...,n}", preprint, April 2008.
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LINKS
| Peter Luschny, Swinging Primes.
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EXAMPLE
| Since 3$ = 4$ = 6 the prime 7 is listed, however only once.
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MAPLE
| a := proc(n) select(isprime, map(x -> A056040(x)+1, [$1..n])) end:
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CROSSREFS
| Cf. A163077 (arguments n), A163074, A163076, A088332.
Sequence in context: A037151 A008840 A156313 * A089359 A081947 A046972
Adjacent sequences: A163072 A163073 A163074 * A163076 A163077 A163078
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KEYWORD
| nonn
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AUTHOR
| Peter Luschny (peter(AT)luschny.de), Jul 21 2009
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