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Search: id:A074814
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| A074814 |
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Numbers n such that the number of primes between n and 2n (inclusive) is equal to the number of primes between n and reverse(n) (inclusive). |
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+0
1
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| 10, 25, 37, 40, 81, 102, 120, 204, 295, 340, 350, 387, 397, 1620, 1743, 2995, 3627, 3997, 4450, 4629, 4999, 8090, 8490, 9201, 9301, 10002, 12310
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OFFSET
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1,1
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EXAMPLE
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10 is here since there are four primes between 10 and 1 and four primes between 10 and 20.
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CROSSREFS
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Sequence in context: A133634 A014090 A154057 this_sequence A002600 A087473 A014120
Adjacent sequences: A074811 A074812 A074813 this_sequence A074815 A074816 A074817
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KEYWORD
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base,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Sep 08 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 10 2003
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