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Search: id:A139776
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| A139776 |
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Average of twin primes p3 such that p1^2+p2^3=p3 and p1^3+p2^2=p4, p3 and p4 are average of twin primes.p1 and p2 consecutive primes, p1 < p2. |
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1
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OFFSET
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1,1
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MATHEMATICA
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a={}; Do[p1=Prime[n]; p2=Prime[n+1]; p3=p1^2+p2^3; p4=p1^3+p2^2; If[PrimeQ[p3-1]&&PrimeQ[p3+1]&&PrimeQ[p4-1]&&PrimeQ[p4+1], AppendTo[a, p3]], {n, 13^5}]; Print[a];
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CROSSREFS
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Adjacent sequences: A139773 A139774 A139775 this_sequence A139777 A139778 A139779
Sequence in context: A052356 A110599 A138717 this_sequence A125268 A076583 A046709
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KEYWORD
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nonn,bref
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), May 16 2008
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