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Search: id:A155036
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| A155036 |
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Primes p such that prime is a concatenation of composite n and n-th prime. |
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+0
1
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OFFSET
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1,1
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EXAMPLE
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If n=4=composite and 7=prime(4), then concatenation 47 = prime and 7=a(1). If n=6=composite and 13=prime(6), then concatenation 613 = prime and 13=a(2). If n=12=composite and 37=prime(12), then concatenation 1237 = prime and 37=a(3). If n=18=composite and 61=prime(18), then concatenation 1861 = prime and 61=a(4), etc.
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CROSSREFS
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Cf. A000027, A000040, A002808.
Sequence in context: A067692 A117706 A066673 this_sequence A088985 A022005 A118819
Adjacent sequences: A155033 A155034 A155035 this_sequence A155037 A155038 A155039
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KEYWORD
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nonn,base,uned
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)ranbler.ru), Jan 19 2009
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