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 A046056 #33 Feb 16 2025 08:32:38 %S A046056 1,4,8,36,16,72,32,900,216,144,64,1800,0,288,128,44100,0,5400,0,3600, %T A046056 864,256,0,88200,1296,0,27000,7200,0,512,0,5336100,1728,0,2592,264600, %U A046056 0,0,0,176400,0,1024,0,2304,3456,0,0,10672200,7776,32400,0,0,0,1323000,5184,2048,0,0,0,4608 %N A046056 Smallest order for which there are n nonisomorphic finite Abelian groups, or 0 if no such order exists. %C A046056 There is a k: A000688(k)=n if and only if n is product of partition numbers. %H A046056 Charlie Neder, <a href="/A046056/b046056.txt">Table of n, a(n) for n = 1..1000</a> %H A046056 B. Horvat, G. Jaklic and T. Pisanski, <a href="https://arxiv.org/abs/math/0503183">On the number of Hamiltonian groups</a>, arXiv:math/0503183 [math.CO], 2005. %H A046056 Charlie Neder, <a href="/A046056/a046056.py.txt">Python program for computing this sequence</a>. %H A046056 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/AbelianGroup.html">Abelian Group</a>. %H A046056 <a href="/index/Gre#groups">Index entries for sequences related to groups</a> %Y A046056 Cf. A000041, A000688, A033637, A046054, A046055, A046057. %K A046056 nonn,nice %O A046056 1,2 %A A046056 _Eric W. Weisstein_ %E A046056 More terms from _Christian G. Bower_ %E A046056 a(20) and a(28) corrected, and a(52)-a(60) from _Charlie Neder_, Jan 17 2019