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 A350375 #11 Dec 28 2021 14:51:07 %S A350375 1260,1980,2100,2340,2520,2772,2940,3060,3150,3276,3300,3420,3780, %T A350375 3900,3960,4140,4200,4284,4410,4680,4788,4950,5040,5100,5148,5220, %U A350375 5544,5580,5700,5796,5850,5880,5940,6120,6468,6552,6600,6660,6732,6840,6900,7020,7260,7308 %N A350375 Numbers with exactly 8 semiprime divisors. %t A350375 q[n_] := DivisorSum[n, 1 &, PrimeOmega[#] == 2 &] == 8; Select[Range[7500], q] (* _Amiram Eldar_, Dec 28 2021 *) %o A350375 (PARI) isok(k) = sumdiv(k, d, bigomega(d)==2) == 8; \\ _Michel Marcus_, Dec 28 2021 %Y A350375 Numbers with exactly k semiprime divisors: A346041 (k=1), A345381 (k=2), A345382 (k=3), A350371 (k=4), A350372 (k=5), A350373 (k=6), A350374 (k=7), this sequence (k=8). %K A350375 nonn %O A350375 1,1 %A A350375 _Wesley Ivan Hurt_, Dec 27 2021