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 A262782 a(n) = sum_{k=1..n} 3^prime(k). 0
 9, 36, 279, 2466, 179613, 1773936, 130914099, 1293175566, 95436354393, 68725813719276, 686399210003223, 450970305101000586, 36923966682271786989, 365180934076808864616, 26953995293034312152403, 19410199662973054208949126, 14149796291401707558973760193, 141323271117050318101857059796 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(2) = 3^prime(1) + 3^prime(2) = 3^2+3^3=36. MATHEMATICA Accumulate@ Array[3^Prime@ # &, {18}] (* Michael De Vlieger, Mar 24 2016 *) PROG (PARI) a(n) = sum(k=1, n, 3^prime(k)); \\ Altug Alkan, Mar 24 2016 CROSSREFS Cf. A057901. Sequence in context: A036907 A027381 A024120 * A204513 A223306 A272890 Adjacent sequences:  A262779 A262780 A262781 * A262783 A262784 A262785 KEYWORD nonn,easy AUTHOR Emre APARI, Mar 24 2016 EXTENSIONS More terms from Michael De Vlieger, Mar 24 2016 STATUS approved

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Last modified October 18 17:13 EDT 2019. Contains 328186 sequences. (Running on oeis4.)