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Search: id:A120384
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| A120384 |
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Isolated primes: geometric mean of distances of a prime to neighboring primes sets record. |
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+0
1
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| 3, 5, 7, 23, 53, 89, 113, 211, 1259, 1327, 1847, 2179, 2503, 5623, 14107, 19661, 24281, 38501, 58831, 268343, 396833
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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A096265 is based on arithmetic mean or total distance to neighbours. But it doesn't say its it is isolated from them or close to one of them.
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EXAMPLE
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a(4) = 23 because the distance (geometric mean) to its neighbours (19 and 29) equals = sqr(4*6) = 4.8989. No smaller prime is more isolated. The next more isolated prime a(5) is 53.
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CROSSREFS
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Cf. A096265.
Sequence in context: A057182 A038916 A019363 this_sequence A096505 A141802 A029846
Adjacent sequences: A120381 A120382 A120383 this_sequence A120385 A120386 A120387
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KEYWORD
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nonn
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AUTHOR
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Alexis Monnerot-Dumaine (alexis.monnerotdumaine(AT)gmail.com), Jun 29 2006
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