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 A359597 #8 Jan 12 2023 13:55:56 %S A359597 1,135,189,297,315,351,375,459,495,513,525,585,621,693,735,765,783, %T A359597 819,825,837,855,875,975,999,1029,1035,1071,1107,1155,1161,1197,1269, %U A359597 1275,1287,1305,1365,1375,1395,1425,1431,1449,1593,1617,1625,1647,1665,1683,1715,1725,1785,1809,1815,1827,1845,1881 %N A359597 Indices k such that A358777(k) is odd, and k is not an odd semiprime. %C A359597 2025 = 3^4 * 5^2, 30375 = 3^5 * 5^3 and 455625 == 3^6 * 5^4 are the first terms with respectively 6, 8 and 10 prime factors (with multiplicity). %o A359597 (PARI) isA359597(n) = ((!A353480(n)) && A359595(n)); %Y A359597 Setwise difference A359596 \ A046315. %Y A359597 Odd terms of A065036 form a subset. %Y A359597 Cf. A353480, A359595, A359598. %K A359597 nonn %O A359597 1,2 %A A359597 _Antti Karttunen_, Jan 09 2023