This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A098137 #18 Sep 08 2022 08:45:14
%S A098137 2,12,270,16640,48831250,13060740672,232630514810750,
%T A098137 144115188092633088,8862938119652888516418,
%U A098137 100000000000000000010000000000,191943424957750480504432152962422,8505622499821102144576131693030930382848,4695452425098908797088971409337724910182721066
%N A098137 a(n) = n^n + n^prime(n).
%F A098137 a(n) = A000312(n) + A062481(n). - _Michel Marcus_, Aug 27 2015
%e A098137 a(1) = 1^1 + 1^2 = 2.
%e A098137 a(2) = 2^2 + 2^3 = 12.
%e A098137 a(3) = 3^3 + 3^5 = 270.
%t A098137 Table[n^Prime[n] + n^n, {n, 1, 15}] (* _Stefan Steinerberger_, Feb 28 2006 *)
%o A098137 (PARI) first(m)=vector(m,i,i^i + i^prime(i)) \\ _Anders Hellström_, Aug 26 2015
%o A098137 (Magma) [n^n + n^(NthPrime(n)): n in [1..20]]; // _Vincenzo Librandi_, Aug 27 2015
%Y A098137 Cf. A000312, A062481, A089622.
%K A098137 nonn
%O A098137 1,1
%A A098137 _Parthasarathy Nambi_, Sep 27 2004
%E A098137 More terms from _Stefan Steinerberger_, Feb 28 2006
%E A098137 a(12)-a(13) from _Vincenzo Librandi_, Aug 27 2015