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 A103578 #14 Jan 01 2022 09:56:07
%S A103578 1,3,5,9,15,15,21,21,25,27,45,45,63,63,63,63,75,75,81,81,105,105,105,
%T A103578 105,135,135,135,135,135,135,189,189,225,225,225,225,243,243,243,243,
%U A103578 315,315,315,315,315,315,315,315,405,405,405,405,405,405,405,405,405
%N A103578 Number of divisors of m^2, where m is the smallest number with at least n divisors.
%H A103578 Amiram Eldar, <a href="/A103578/b103578.txt">Table of n, a(n) for n = 1..10000</a>
%F A103578 a(n) = A000005((A061799(n))^2). - _R. J. Mathar_, Sep 01 2008
%e A103578 a(8) = 21 because smallest number with 8 divisors is 24, 24^2 = 576 and 576 has 21 divisors.
%t A103578 a = {}; i = 1; For[n = 1, n < 60, n++, While[DivisorSigma[0, i] < n, i++ ]; AppendTo[a, DivisorSigma[0, i^2]]]; a (* _Stefan Steinerberger_, Aug 31 2008 *)
%Y A103578 Cf. A000005, A061799, A141264.
%K A103578 nonn
%O A103578 1,2
%A A103578 _Stefan Steinerberger_, Aug 31 2008
%E A103578 Edited by _R. J. Mathar_, Sep 01 2008, Dec 15 2008
%E A103578 Extended beyond a(8) by _R. J. Mathar_, Aug 31 2008