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 A153076 #16 Jul 19 2016 16:24:53 %S A153076 5,29,104,1538,13842,188424,3249576,101864576,2388809736,59720243400, %T A153076 2571228006912,85266458294400,6038197537693842,227036227417289064, %U A153076 12129959730964036050,606111287080086323712,36186481977293685109248 %N A153076 Smallest number m such that sigma(m) = A002110(n) where A002110(n) is the product of the first n primes. %H A153076 Ray Chandler, Max Alekseyev, <a href="/A153076/b153076.txt">Table of n, a(n) for n = 2..24</a> %H A153076 Max A. Alekseyev, <a href="https://www.emis.de/journals/JIS/VOL19/Alekseyev/alek5.html">Computing the Inverses, their Power Sums, and Extrema for Euler's Totient and Other Multiplicative Functions</a>. Journal of Integer Sequences, Vol. 19 (2016), Article 16.5.2 %F A153076 a(n) = A051444(A002110(n)). - _Ray Chandler_ %e A153076 a(9) = 101864576. Sigma(101864576) = A002110(9) = 223092870 = 2*3*5*7*11*13*17*19*23. %Y A153076 Cf. A000203, A002110, A153077, A153078. %K A153076 nonn %O A153076 2,1 %A A153076 _Donovan Johnson_, Dec 19 2008 %E A153076 Extended by _Ray Chandler_, Dec 28 2008 %E A153076 a(22)-a(24) added to b-file by _Max Alekseyev_, Jan 31 2012