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A269327
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a(n) = 7^prime(n).
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2
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49, 343, 16807, 823543, 1977326743, 96889010407, 232630513987207, 11398895185373143, 27368747340080916343, 3219905755813179726837607, 157775382034845806615042743, 18562115921017574302453163671207, 44567640326363195900190045974568007
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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..13.
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FORMULA
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a(n) = 7^A000040(n).
Sum_{n>=1} 1/a(n) = A132822. - Amiram Eldar, Aug 11 2020
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EXAMPLE
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The second prime is 3, hence a(2) = 7^3 = 343.
The third prime is 5, hence a(3) = 7^5 = 16807.
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MAPLE
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A269327:=n->7^ithprime(n): seq(A269327(n), n=1..20); # Wesley Ivan Hurt, Mar 07 2016
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MATHEMATICA
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7^Prime[Range[20]] (* Alonso del Arte, Feb 23 2016 *)
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PROG
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(MAGMA) [7^p: p in PrimesUpTo(45)]; // Vincenzo Librandi, Feb 25 2016
(PARI) a(n) = 7^prime(n); \\ Altug Alkan, Mar 04 2016
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CROSSREFS
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Cf. A000040, A000420, A034785, A053810, A057901, A057902, A132822.
Sequence in context: A211756 A036323 A066429 * A206255 A017606 A206248
Adjacent sequences: A269324 A269325 A269326 * A269328 A269329 A269330
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KEYWORD
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nonn,easy
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AUTHOR
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Emre APARI, Feb 23 2016
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STATUS
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approved
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