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Search: id:A119751
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| A119751 |
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a(1)=1, a(n) = first odd number greater than a(n-1) such that 2*a(n)+1 is prime and a(n) + a(i) + 1 is prime, 1<=i<=n-1. |
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+0
8
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| 1, 3, 9, 69, 429, 4089, 86529, 513099, 913569, 7914339, 6593621379, 9366241599, 456246278469, 4565283812559
(list; graph; listen)
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OFFSET
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1,2
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CROSSREFS
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Sequence in context: A093351 A018543 A026090 this_sequence A084543 A018564 A004167
Adjacent sequences: A119748 A119749 A119750 this_sequence A119752 A119753 A119754
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KEYWORD
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more,nonn
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AUTHOR
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Walter Kehowski (wkehowski(AT)cox.net), Jun 17 2006
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EXTENSIONS
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a(13)-a(14) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 23 2008
Corrected and edited. Changed a(12) to a(13). Donovan added only a(13) and a(14). The first twelve were originally submitted by me (walter kehowski). - walter kehowski (wkehowski(AT)cox.net), Oct 18 2008
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