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Search: id:A103886
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| A103886 |
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Rearrangement of prime numbers p according to number of divisors of p-/+1. |
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+0
2
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| 2, 7, 13, 3, 19, 31, 5, 41, 37, 11, 103, 43, 17, 137, 61, 23, 199, 67, 29, 307, 73, 47, 349, 97, 53, 491, 101, 59, 739, 109
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OFFSET
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1,1
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COMMENT
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Number of divisors of p-1 (less than, equals and larger than) number of divisors of p+1. A103887 - position of p(n) in the sequence.
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FORMULA
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a(3k-2)=A103664(k); a(3k-1)=A067889(k); a(3k)=A103665(k); (k=1, 2, ...)
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MATHEMATICA
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Table[{A103664[[n]], A067889[[n]], A103665[[n]]}, {n, 10}]//Flatten
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CROSSREFS
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Cf. A067889, A103664, A103665, A103887.
Sequence in context: A055257 A084068 A046243 this_sequence A130710 A145300 A018322
Adjacent sequences: A103883 A103884 A103885 this_sequence A103887 A103888 A103889
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Feb 20 2005
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