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Search: id:A157473
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| A157473 |
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Primes : if (p-2)^(1/3)-+2 are also primes. |
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+0
1
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| 2, 127, 91127, 328511, 1157627, 2146691, 12326393, 125751503, 693154127, 751089431, 1033364333, 2102071043, 2222447627, 2893640627, 3314613773, 3951805943, 6591796877, 9063964127, 13464285941, 16406426423, 19880486831
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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(127-2)^(1/3)-2=3;(127-2)^(1/3)+2=7,...
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MATHEMATICA
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q=2; lst={}; Do[p=Prime[n]; r=(p-q)^(1/3)-q; u=(p-q)^(1/3)+q; If[PrimeQ[r]&&PrimeQ[u], AppendTo[lst, p]], {n, 4*9!}]; lst
lst = {}; p = 0; While[p < 2955, If[ PrimeQ[p - 2] && PrimeQ[p + 2] && PrimeQ[p^3 + 2], AppendTo[lst, p^3 + 2]]; p++ ]; lst [From Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 08 2009]
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CROSSREFS
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Cf. A127435, A127436, A157467, A157468
Sequence in context: A075596 A092832 A105761 this_sequence A004864 A106319 A106320
Adjacent sequences: A157470 A157471 A157472 this_sequence A157474 A157475 A157476
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Mar 01 2009
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EXTENSIONS
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a(8)-a(21) from Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 08 2009
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