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 A086487 #4 Dec 05 2013 19:56:19 %S A086487 2,0,30,1122,2730,72930,870870,9699690,340510170,9592993410, %T A086487 265257422430,8624101075590,304250263527210,14299762385778870, %U A086487 1164365758518632670,43657174563782890110,1987938667108592728530 %N A086487 Smallest number with n prime divisors such that the sum of the prime divisors is also a divisor, or 0 if no such number exists. %C A086487 First member of A086486 with n distinct prime factors. A001221(a(n)) = n; A008472(a(n)) divides a(n). - _David Wasserman_, Mar 09 2005 %e A086487 a(3) = 30. The prime divisors of 30 are 2,3 and 5 and 2+3+5 = 10, divides 30. %Y A086487 Cf. A086486, A086488. %Y A086487 Cf. A001221, A008472, A104465, A104466. %K A086487 nonn %O A086487 1,1 %A A086487 _Amarnath Murthy_, Jul 28 2003 %E A086487 More terms from _David Wasserman_, Mar 09 2005