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 A171265 #7 Sep 19 2013 03:19:59 %S A171265 9186050031556349952001,837294585717161066223413745156096001, %T A171265 102833200965458113792221682653890347008001, %U A171265 8564360335859979576063023115658227351552001 %N A171265 Primes of the form 1 + 6-multiperfect numbers. %C A171265 Primes of the form 1+A046061(n). A subsequence of A093034. This sequence has only 8 terms. a(5)=1+A046061(76),a(6)=1+A046061(79), %C A171265 a(7)=1+A046061(204) and a(8)=1+A046061(209). %C A171265 If p is a term of this sequence then for each positive integer k, x=p^k is a solution for the equation sigma(phi(x))=6(x-1). See comment lines of the sequence A093034. %e A171265 p=9186050031556349952001 is prime and sigma(p-1)/(p-1)=6, so p is in the sequence. %Y A171265 Cf. A046061, A093034, A171263, A171264. %K A171265 fini,nonn %O A171265 1,1 %A A171265 _M. F. Hasler_ and _Farideh Firoozbakht_, Apr 15 2010