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 A095682 #4 Apr 19 2016 01:07:34
%S A095682 36,392,152352,6072901632,1444601174400
%N A095682 Primitive 1+prime power perfect numbers: if n=Product p_i^r_i then 1PPsigma(n)= Product {Sum p_i^r_i, 1<=s_i<=r_i, s_i is one or prime} 1PPsigma(n)=2*n.
%C A095682 Factorizations: 2^2*3^2, 2^3*7^2, 2^5*3^2*23^2, 2^13*3^2*7^2*41^2, 2^7*3^5*5^2*29^2*47^2. No squarefree solution exists.
%e A095682 1PPsigma(2^5*3^3)=(2+2^2+2^3+2^5)*(3+3^2+3^3)=1794
%Y A095682 Cf. A096290.
%K A095682 nonn
%O A095682 1,1
%A A095682 _Yasutoshi Kohmoto_