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A127598
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Least primes of the from k 4^n + (4^n-1)/3.
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1
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2, 5, 5, 149, 853, 2389, 17749, 70997, 218453, 2708821, 3495253, 13981013, 39146837, 492131669, 626349397, 27201459541, 27201459541, 297784399189, 297784399189, 3665038759253, 3665038759253, 89426945725781
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..22.
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MATHEMATICA
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a = {}; Do[k = 0; While[ !PrimeQ[k 4^n + (4^n - 1)/3], k++ ]; AppendTo[a, k 4^n + (4^n - 1)/3], {n, 0, 50}]; a (*Artur Jasinski*)
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CROSSREFS
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Cf. A035050, A007522, A127575, A127576, A127577, A127578, A127580, A127581, A087522, A127586, A127587, A127589, A127590, A127591, A127592, A127593, A127594, A127597.
Sequence in context: A073339 A180092 A074636 * A196550 A011037 A111987
Adjacent sequences: A127595 A127596 A127597 * A127599 A127600 A127601
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski, Jan 19 2007
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STATUS
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approved
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