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 A180163 #18 Oct 27 2017 19:53:15 %S A180163 62480,1432640,7660880,27931280,39685376,116636864,179299575, %T A180163 318523136,4217802560,4494828240,4952759175,6067699000,7775676090, %U A180163 12285798525,15069863936,17358731325,20160203840,25845386480,30293400832 %N A180163 Products of pairs of amicable numbers (see A063990). %C A180163 For a more reasonable sequence, in which both factors always belong to the same amicable pair, see A180202, which first differs from this sequence at a(9). - _Omar E. Pol_, Oct 25 2017 %F A180163 a(n) = A063990(2*n-1) * A063990(2*n). %e A180163 a(1) = 220 * 284 = 62480 = 2^4 * 5 * 11 * 71. %e A180163 a(2) = 1184 * 1210 = 1432640 = 2^6 * 5 * 11^2 * 37. %Y A180163 Cf. A002025, A002046, A063990, A161005, A180202, A259180. %K A180163 easy,nonn,less %O A180163 1,1 %A A180163 _Jonathan Vos Post_, Aug 14 2010