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 A350373 #11 Dec 28 2021 14:50:57 %S A350373 210,330,390,462,510,546,570,690,714,770,798,858,870,900,910,930,966, %T A350373 1110,1122,1155,1190,1218,1230,1254,1290,1302,1326,1330,1365,1410, %U A350373 1430,1482,1518,1554,1590,1610,1722,1764,1770,1785,1794,1800,1806,1830,1870,1914,1938,1974,1995 %N A350373 Numbers with exactly 6 semiprime divisors. %t A350373 q[n_] := DivisorSum[n, 1 &, PrimeOmega[#] == 2 &] == 6; Select[Range[2000], q] (* _Amiram Eldar_, Dec 28 2021 *) %o A350373 (PARI) isok(k) = sumdiv(k, d, bigomega(d)==2) == 6; \\ _Michel Marcus_, Dec 28 2021 %Y A350373 Numbers with exactly k semiprime divisors: A346041 (k=1), A345381 (k=2), A345382 (k=3), A350371 (k=4), A350372 (k=5), this sequence (k=6), A350374 (k=7), A350375 (k=8). %K A350373 nonn %O A350373 1,1 %A A350373 _Wesley Ivan Hurt_, Dec 27 2021