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Search: id:A101471
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| A101471 |
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Numbers n such that the number n11 is prime. |
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+0
2
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| 0, 2, 3, 8, 9, 15, 18, 20, 21, 23, 24, 27, 30, 35, 39, 41, 42, 50, 57, 60, 62, 63, 69, 72, 74, 80, 81, 83, 90, 93, 95, 98, 101, 102, 107, 113, 114, 120, 122, 125, 126, 129, 134, 137, 140, 144, 155, 161, 164, 168, 170, 179, 182, 183, 189, 192, 200, 204, 206, 210, 212
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Chris Caldwell, The first 1,000 primes.
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EXAMPLE
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If n=2, then n11 = 211 (prime)
If n=50, then n11 = 5011 (prime)
If n=98, then n11 = 9811 (prime)
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MATHEMATICA
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Select[ Range[0, 215], PrimeQ[ FromDigits[ Flatten[ IntegerDigits /@ { #, 1, 1}]]] &] (from Robert G. Wilson v Feb 21 2005)
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CROSSREFS
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Cf. A024912.
Sequence in context: A099148 A029787 A054462 this_sequence A137471 A051209 A093765
Adjacent sequences: A101468 A101469 A101470 this_sequence A101472 A101473 A101474
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 30 2005, Feb 18 2005
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EXTENSIONS
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Corrected and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 21 2005
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