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 A079323 #10 Feb 16 2025 08:32:48 %S A079323 179210312,10189653632,11306629375,12372501247,12450928125, %T A079323 16064890623,100911346046,102029981184,103029727742,103538511872, %U A079323 103852693375,105264783872,107943730622,112167589373,114281242494,115827546751 %N A079323 First number in a sequence of 4 consecutive economical numbers. %H A079323 J.-M. De Koninck and F. Luca, <a href="http://www.emis.de/journals/INTEGERS/papers/a5int2003/a5int2003.pdf">On strings of consecutive economical numbers of arbitrary length</a> %H A079323 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/EconomicalNumber.html">Economical Number</a> %e A079323 a(2) = 10189653632 because 10189653632 ( = 2^7 * 79606669), 10189653633 ( = 3^6 * 733 * 19069), 10189653634 ( = 2 * 227^2 * 98873), 10189653635 ( = 5 * 7^3 * 5941489) form a sequence of 4 consecutive economical numbers. %Y A079323 Cf. A047738. %K A079323 hard,nonn,base %O A079323 1,1 %A A079323 Sudipta Das (juitech(AT)vsnl.net), Feb 12 2003 %E A079323 a(7)-a(16) from _Donovan Johnson_, Apr 14 2010