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 A233819 #15 Jan 01 2024 10:01:57
%S A233819 1,3,9,15,27,45,81,135,105,243,225,405,315,729,675,1215,945,2187,2025,
%T A233819 1575,3645,1155,3375,2835,6561,6075,4725,10935,3465,10125,8505,19683,
%U A233819 18225,14175,32805,10395,30375,11025,25515,59049,23625,54675,17325,50625,42525,98415,31185,91125,33075,76545,177147,70875
%N A233819 Least odd integer of each prime signature ordered by prime signatures occurrence.
%C A233819 a(n) is the least odd integer with the same prime signature as A025487(n).
%H A233819 Amiram Eldar, <a href="/A233819/b233819.txt">Table of n, a(n) for n = 1..10000</a>
%H A233819 Will Nicholes, <a href="http://willnicholes.com/math/primesiglist.htm">Prime Signatures</a>
%F A233819 a(n) = A003961(A025487(n)). - _Amiram Eldar_, Jun 23 2019
%e A233819 a(7) is the first odd integer with prime signature {1,3} = 3^3*5 = 135.
%e A233819 a(8) is the first odd integer with prime signature {1,1,1} = 3*5*7 = 105.
%Y A233819 Cf. A003961, A025487, A147516.
%K A233819 nonn
%O A233819 1,2
%A A233819 _Lior Manor_, Dec 16 2013