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Search: id:A062209
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| A062209 |
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Smoothly undulating palindromic primes of the form (12*10^a(n)-21)/99. |
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+0
27
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OFFSET
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0,1
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COMMENT
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Prime versus probable prime status and proofs are given in the author's table.
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REFERENCES
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J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 139, p. 48, Ellipses, Paris 2008.
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LINKS
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P. De Geest, SUPP Reference Table
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EXAMPLE
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a(n)=11 --> (12*10^11-21)/99 = 12121212121.
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CROSSREFS
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Cf. A062210-A062232, A059758, A032758.
Adjacent sequences: A062206 A062207 A062208 this_sequence A062210 A062211 A062212
Sequence in context: A138122 A129865 A153377 this_sequence A086828 A117392 A105867
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com) and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001.
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