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Search: id:A062736
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| A062736 |
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Primes of form Sum_{k=1..n} prime(k)+1. |
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+0
1
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| 3, 7, 13, 47, 109, 139, 251, 397, 457, 587, 659, 733, 1187, 1291, 1399, 2161, 2311, 2621, 2953, 3307, 4073, 4273, 4937, 5167, 5641, 7477, 7759, 10259, 10607, 10957, 11311, 12413, 13177, 13567, 15619, 20639, 23167, 24781, 25339, 25903, 28211
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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EXAMPLE
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a(4)= 47 because 3+4+6+8+12+14 = 47.
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PROGRAM
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(PARI) je=[]; for(n=1, 350, x=sum(k=1, n, prime(k)+1); if(isprime(x), je=concat(je, x))); je
(PARI) { n=a=0; for (k=1, 10^5, if (isprime(a+=prime(k) + 1), write("b062736.txt", n++, " ", a); if (n==1000, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 10 2009]
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CROSSREFS
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Sequence in context: A086208 A090968 A020641 this_sequence A103564 A083201 A004060
Adjacent sequences: A062733 A062734 A062735 this_sequence A062737 A062738 A062739
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 12 2001
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