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A059786
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Smallest prime after 2*(nth prime).
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2
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5, 7, 11, 17, 23, 29, 37, 41, 47, 59, 67, 79, 83, 89, 97, 107, 127, 127, 137, 149, 149, 163, 167, 179, 197, 211, 211, 223, 223, 227, 257, 263, 277, 281, 307, 307, 317, 331, 337, 347, 359, 367, 383, 389, 397, 401, 431, 449, 457, 461, 467, 479, 487, 503, 521
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n) = A117928(n,1) for n>1. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 03 2006
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EXAMPLE
| n=17, 18, p(17)=59, p(18)=61, after 118 and 122 the next prime is 127, so a(17)=a(18)=127.
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MAPLE
| with(numtheory): [seq(nextprime(2*ithprime(k)), k=1..256)];
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CROSSREFS
| A055496, A006992.
Sequence in context: A124598 A096215 A144742 * A166574 A163846 A156104
Adjacent sequences: A059783 A059784 A059785 * A059787 A059788 A059789
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Feb 22 2001
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