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 A119987 #27 Sep 08 2022 08:45:25 %S A119987 2,3,13,3251,16777729,387421219,11112006825560761, %T A119987 443426488243037769948249630619149912487, %U A119987 1075911801979993982060429252856123779115487368830416064665177 %N A119987 Primes of the form k^k + k^3 + 1. %C A119987 The values of k such that k^k + k^2 + 1 is prime are 0, 1, 2, 5, 8, 9, 14, 27, 38, 62, 255, (4000), .... per _Vincenzo Librandi_'s extension, 2 is an element iff one defines 0^0 = 1. %H A119987 Charles R Greathouse IV, <a href="/A119987/b119987.txt">Table of n, a(n) for n = 1..11</a> %t A119987 f[n_] := (n^n + n^3 + 1); Select[f@ Range@ 40, PrimeQ] %o A119987 (Magma) [ a: n in [0..250] | IsPrime(a) where a is n^n+n^3+1 ]; // _Vincenzo Librandi_, Dec 22 2010 %o A119987 (PARI) for(n=1, 255, if(ispseudoprime(t=n^n+n^3+1), print1(t", "))); v \\ _Charles R Greathouse IV_, Feb 17 2011 %Y A119987 Cf. A000040, A120479, A120480, A119264, A119448. %K A119987 nonn %O A119987 1,1 %A A119987 _Jonathan Vos Post_, Aug 03 2006 %E A119987 2 added by _Vincenzo Librandi_, Dec 22 2010