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 A290245 #7 Aug 03 2017 11:37:15 %S A290245 0,1,9,19,38,66,148,292,548,966,1688 %N A290245 Number of larger members of primitive friendly pairs <= 10^n. %C A290245 a(3)-a(11) were from the paper by Pollack and Pomerance. %H A290245 Paul Pollack and Carl Pomerance, <a href="http://dx.doi.org/10.1090/btran/10">Some problems of Erdős on the sum-of-divisors function</a>, Transactions of the American Mathematical Society, Series B Vol. 3, No. 1 (2016), pp. 1-26. %Y A290245 Cf. A233039. %K A290245 nonn,more %O A290245 1,3 %A A290245 _Amiram Eldar_, Jul 24 2017