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Search: id:A075599
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| A075599 |
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a(1) = 7 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1). |
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8
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| 7, 173, 11731, 2117317, 421173173, 34211731733, 1342117317337, 813421173173377, 28134211731733771, 4281342117317337713, 142813421173173377131, 21428134211731733771317, 2214281342117317337713171, 2221428134211731733771317113, 922214281342117317337713171139
(list; graph; listen)
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OFFSET
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1,1
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CROSSREFS
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Cf. A075595, A075596, A075597, A075598, A075600, A075601, A075602.
Sequence in context: A005019 A113562 A157203 this_sequence A012500 A094257 A162082
Adjacent sequences: A075596 A075597 A075598 this_sequence A075600 A075601 A075602
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 28 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 20 2003
Further terms from Ray G. Opao (1260(AT)email.com), Nov 26 2004
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