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A201965
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Primes of the form identical digits preceded by a 10.
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1
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101, 103, 107, 109, 1033, 10111, 10333, 101111, 103333, 107777, 10333333, 101111111, 103333333, 1033333333, 10999999999, 101111111111, 1099999999999, 10333333333333, 101111111111111111, 1099999999999999999, 10333333333333333333
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..37
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MATHEMATICA
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Select[FromDigits/@Flatten[Table[PadRight[{10}, i, #]&/@{1, 2, 3, 4, 5, 6, 7, 8, 9}, {i, 2, 200}], 1], PrimeQ[#]&]
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CROSSREFS
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Sequence in context: A119680 A329737 A166571 * A318157 A117837 A176929
Adjacent sequences: A201962 A201963 A201964 * A201966 A201967 A201968
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KEYWORD
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nonn,base,less
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AUTHOR
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Vincenzo Librandi, Dec 10 2011
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STATUS
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approved
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