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 A116035 #8 Jul 15 2021 06:31:50 %S A116035 1,4,15,33,35,36,50,55,57,64,65,75,77,85,87,93,98,115,119,129,133,143, %T A116035 155,159,185,187,189,205,213,215,217,219,242,243,247,253,265,287,295, %U A116035 303,309,323,324,327,339,345,365,385,393,395,407,425,427,453,469,493 %N A116035 Numbers k such that k + phi(k) + sigma(k) is a prime. %H A116035 Harvey P. Dale, <a href="/A116035/b116035.txt">Table of n, a(n) for n = 1..1000</a> %e A116035 205 + phi(205) + sigma(205) = 617 (prime). %t A116035 Select[Range[500],PrimeQ[#+EulerPhi[#]+DivisorSigma[1,#]]&] (* _Harvey P. Dale_, Nov 09 2014 *) %Y A116035 Cf. A078762, A068080. %K A116035 nonn %O A116035 1,2 %A A116035 _Giovanni Resta_, Feb 13 2006