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A217892
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Indices of records in A194591.
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4
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1, 5, 13, 47, 59, 109, 241, 335, 1109, 1373, 1447, 14893, 37892, 56543, 185644, 649603, 838441, 8840101, 16935761, 100604513, 118373279, 270704167, 1355477231
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Record values are given by A194600.
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LINKS
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MATHEMATICA
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a[n_]:= (k=0; While[!PrimeQ[n*2^k-1] && !PrimeQ[n*2^k+1], k++]; k); w = {1}; v = {0}; Do[If[a[n]>v[[-1]], AppendTo[v, a[n]]; Print[n]], {n, 1356000000}] (* Farideh Firoozbakht, Oct 16 2014 *)
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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