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 A046062 #12 Dec 29 2023 21:33:18 %S A046062 2,3,7,13,43,41,157,109,193,313,487,337,241,661,433,937,641,881,1013, %T A046062 769,1249,2053,1861,2269,3121,1321,4423,3037,3001,4621,1873,6163,2017, %U A046062 5441,3613,2161,6553,4049,5581 %N A046062 Primes of the form n*phi(n)+1 where phi(n) is the Euler function. %C A046062 Listed in order of increasing n. %H A046062 T. D. Noe, <a href="/A046062/b046062.txt">Table of n, a(n) for n=1..1000</a> %e A046062 7 because 3*phi(3)+1 = 7 is prime. %t A046062 Select[Array[# EulerPhi[#]+1&,500],PrimeQ] (* _Harvey P. Dale_, Apr 21 2012 *) %Y A046062 Cf. A002618, A046078. %K A046062 easy,nice,nonn %O A046062 1,1 %A A046062 _Felice Russo_