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Search: id:A067848
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| A067848 |
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prime(n)+1 divides prime(n^2)+1. |
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+0
1
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OFFSET
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1,2
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COMMENT
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a(9) > 3*10^5. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 15 2009]
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EXAMPLE
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prime(3)+1 = 6, prime(3^2)+1 = 30, so 3 is a term of the sequence.
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MATHEMATICA
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Select[Range[10^5], Mod[Prime[ #^2] + 1, Prime[ # ] + 1] == 0 &]
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CROSSREFS
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Sequence in context: A073997 A007118 A012572 this_sequence A139802 A063666 A006247
Adjacent sequences: A067845 A067846 A067847 this_sequence A067849 A067850 A067851
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KEYWORD
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nonn,new
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Feb 14 2002
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EXTENSIONS
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a(7)-a(8) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 15 2009
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