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%I #8 Sep 08 2022 08:45:15
%S 243,2187,177147,14348907,94143178827,7625597484987,50031545098999707,
%T 4052555153018976267,26588814358957503287787,
%U 14130386091738734504764811067,1144561273430837494885949696427,608266787713357709119683992618861307,3990838394187339929534246675572349035227
%N 3^(2p + 1) where p is prime.
%e 3^(2*2 + 1) = 243.
%o (Magma) [(3^(2*p + 1)): p in PrimesUpTo(70)]; // _Vincenzo Librandi_, Feb 04 2011
%K nonn
%O 1,1
%A _Parthasarathy Nambi_, Dec 02 2004
%E a(6)-a(13) from _Vincenzo Librandi_, Feb 04 2011
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