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Search: id:A067852
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| A067852 |
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Numbers n such that n divides prime(n^2)-1. |
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+0
1
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| 1, 2, 4, 6, 10, 11, 18, 20, 32, 90, 129, 188, 244, 678, 688, 756, 1081, 1322, 1477, 19758, 21351, 29518, 43187, 49978, 50342, 95708, 182326, 248253
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(29) > 3*10^5. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 15 2009]
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EXAMPLE
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6 divides prime(6^2)-1 = 150, so 6 is a term of the sequence.
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MATHEMATICA
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Select[Range[10^4], Mod[Prime[ #^2] - 1, # ] == 0 &]
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CROSSREFS
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Sequence in context: A004789 A027435 A014666 this_sequence A102025 A090127 A057910
Adjacent sequences: A067849 A067850 A067851 this_sequence A067853 A067854 A067855
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KEYWORD
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nonn
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Feb 15 2002
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EXTENSIONS
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a(20)-a(28) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 15 2009
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