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Search: id:A053845
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| A053845 |
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Primes of form p(1)+...+p(k) + 1 where p(i) =i-th prime. |
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+0
2
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| 3, 11, 29, 59, 101, 239, 569, 1061, 1481, 1721, 4889, 5351, 6871, 22549, 23593, 25801, 29297, 35569, 38239, 41023, 71209, 77137, 87517, 94057, 105541, 120349, 122921, 125509, 128113, 133387, 138869, 141677, 156109, 159073, 165041, 183707
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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p=1; lst={}; Do[p+=Prime[n]; If[PrimeQ[p], AppendTo[lst, p]], {n, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 14 2009]
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PROGRAM
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(UBASIC:) 10 x=x+1; 20 if x<>prmdiv(x) then 10; 30 y=x; 40 r=r+y; 50 if r=prmdiv(r) then print r; :p=p+1; 60 if p<100 then 10
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CROSSREFS
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A013918.
Sequence in context: A111693 A100032 A069350 this_sequence A072610 A110954 A000251
Adjacent sequences: A053842 A053843 A053844 this_sequence A053846 A053847 A053848
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KEYWORD
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easy,nonn
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AUTHOR
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Enoch Haga (Enokh(AT)comcast.net), Mar 28 2000
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