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Search: id:A156793
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| A156793 |
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Indices of primes whose reversal is a different prime. |
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+0
1
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| 6, 7, 11, 12, 20, 21, 22, 25, 28, 30, 35, 37, 39, 41, 46, 64, 68, 69, 72, 77, 126, 127, 130, 131, 132, 133, 135, 136, 155, 159, 160, 162, 163, 164, 166, 167, 169, 172, 173, 174, 178, 180, 182, 184, 185, 186, 190, 191, 194, 196, 197, 198, 199, 200, 201, 202, 203
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Indices of primes in A006567.
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EXAMPLE
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If prime(n=6)=13(1<3) and 31=prime, then 6=a(1). If prime(n=7)=17(1<7) and 71=prime, then 7=a(2). If prime(n=11)=31(3>1) and 13=prime, then 11=a(3), etc.
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CROSSREFS
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Cf. A006567.
Sequence in context: A081359 A015825 A164018 this_sequence A081715 A054504 A166496
Adjacent sequences: A156790 A156791 A156792 this_sequence A156794 A156795 A156796
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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), Feb 16 2009
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EXTENSIONS
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45 replaced by 46. 127, 131, 136, 155, 159 inserted, etc. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 26 2009
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