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 A085718 #6 Dec 15 2017 17:36:27 %S A085718 72,576,648,750,800,900,960,1080,3430,4116,4900,5880,6272,7000,7056, %T A085718 7938,8400,8960,9450,10080,10752,11340,12096,13608,18750,20000,22500, %U A085718 24000,25600,27000,28800,30375,30720,32400,34560,36450,36864,37268 %N A085718 Numbers n such that sopfr(n)/spf(n) is a semiprime and sopfr(n)/lpf(n) is a semiprime, where sopfr(n) = A001414(n) is sum of primes dividing n (with repetition), spf(n) and lpf(n) are smallest and largest primes dividing n, respectively. Also, spf(n)!=lpf(n). %e A085718 648=2^3*3^4 is a term because 2+2+2+3+3+3+3 = 18 and 18/2 = 9 and 18/3 = 6. %K A085718 nonn %O A085718 1,1 %A A085718 _Jason Earls_, Jul 19 2003