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Search: id:A030456
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| A030456 |
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a(n) is smallest prime containing a(n-1) as substring. |
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+0
2
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| 2, 23, 223, 1223, 12239, 122393, 1223939, 12239393, 122393939, 1223939399, 12239393993, 122393939933, 12239393993311, 412239393993311, 8412239393993311, 78412239393993311, 2378412239393993311
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Contribution from Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2009: (Start)
a(18..26)=
23784122393939933111, 2623784122393939933111, 26237841223939399331111,
2623784122393939933111171, 26237841223939399331111717,
2026237841223939399331111717, 20262378412239393993311117177,
320262378412239393993311117177, 3320262378412239393993311117177. (End)
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CROSSREFS
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Sequence in context: A069590 A024028 A068167 this_sequence A069837 A069629 A069614
Adjacent sequences: A030453 A030454 A030455 this_sequence A030457 A030458 A030459
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KEYWORD
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nonn
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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