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Search: id:A065315
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| A065315 |
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Smallest prime divisor of n-th primorial + (n+1)-st prime. |
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+0
3
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| 5, 11, 37, 13, 23, 30047, 510529, 9699713, 127, 107, 433, 1093, 375569, 13082761331670077, 941879, 32589158477190044789, 1922760350154212639131, 4129, 92388407, 5879, 40729680599249024150621323549, 1783, 4903
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=A020639[A002110(n)+A000040(n+1)]
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EXAMPLE
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n=3, 3rd primorial=30,p(4)=7,sum=37, a(3)=37.
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CROSSREFS
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Cf. A002110, A000040, A006530, A006530, A057713, A002584, A002585, A051342 A065314-A065317.
Sequence in context: A164560 A054854 A005178 this_sequence A065317 A152563 A074497
Adjacent sequences: A065312 A065313 A065314 this_sequence A065316 A065317 A065318
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Oct 29 2001
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