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Search: id:A140120
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| A140120 |
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Primes of the form prime(x)*prime(x+1) - (prime(x+1)-prime(x)). |
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+0
1
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| 5, 13, 73, 433, 661, 2017, 3121, 6553, 16633, 47041, 53353, 55681, 116929
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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2*3-(3-2)=2*3-1=5, 3*5-(5-3)=3*5-2=13, 7*11-(11-4)=7*11-4=73
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MATHEMATICA
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a = {}; Do[p1 = Prime[n]; p2 = Prime[n + 1]; p = p1*p2 - (p2 - p1); If[PrimeQ[p], AppendTo[a, p]], {n, 10^2}]; a
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CROSSREFS
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Sequence in context: A139361 A115329 A137702 this_sequence A064169 A081525 A027612
Adjacent sequences: A140117 A140118 A140119 this_sequence A140121 A140122 A140123
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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), Jun 21 2008
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