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 A046317 #30 May 03 2020 16:24:48 %S A046317 81,135,189,225,297,315,351,375,441,459,495,513,525,585,621,625,693, %T A046317 735,765,783,819,825,837,855,875,975,999,1029,1035,1071,1089,1107, %U A046317 1155,1161,1197,1225,1269,1275,1287,1305,1365,1375,1395,1425,1431,1449,1521 %N A046317 Odd numbers divisible by exactly 4 primes (counted with multiplicity). %H A046317 Zak Seidov, <a href="/A046317/b046317.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Harvey P. Dale) %t A046317 Select[Range[1,1601,2],PrimeOmega[#]==4&] (* _Harvey P. Dale_, Aug 15 2014 *) %Y A046317 Cf. A014613. %K A046317 nonn %O A046317 1,1 %A A046317 _Patrick De Geest_, Jun 15 1998 %E A046317 Offset corrected by _Zak Seidov_, May 03 2020