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Search: id:A154317
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| A154317 |
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Numbers n such that nonprime(prime(n))+n = prime. |
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+0
1
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| 1, 3, 22, 25, 29, 31, 36, 52, 65, 102, 119, 121, 128, 130, 138
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Where n-th "prime nonprime" = A141468(A000040(n)) and 1-th "prime nomprime" = 0.
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EXAMPLE
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If n=1 and nonprime(prime(1))+1=nonprime(2)+1=1+1=2(prime), then 1=a(1). If n=2, then nonprime(prime(2))+2=nonprime(3)+2=4+2=4(composite). If ne3 and nonprime(prime(3))+3=nonprime(5)+3=8+3=11(prime), then 3=a(2), etc.
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CROSSREFS
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Cf. A000040,A141468,A154273.
Sequence in context: A037101 A072398 A134924 this_sequence A042547 A079039 A041103
Adjacent sequences: A154314 A154315 A154316 this_sequence A154318 A154319 A154320
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 07 2009
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