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 A034664 #26 Sep 08 2022 08:44:52 %S A034664 8,60,850,16380,358258,8253300,194402650,4624699020,110523825058, %T A034664 2647111898340,63466433646250,1522433108644860,36529334450076658, %U A034664 876595894555956180,21037008518317046650,504872725633265889900 %N A034664 Sum of n-th powers of divisors of 24. %H A034664 T. D. Noe, <a href="/A034664/b034664.txt">Table of n, a(n) for n = 0..200</a> %H A034664 <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (60,-1375,15960,-103348,383040,-792000,829440,-331776). %F A034664 G.f.: -2*(414720*x^7 -792000*x^6 +574560*x^5 -206696*x^4 +39900*x^3 -4125*x^2 +210*x -4) / ((x -1)*(2*x -1)*(3*x -1)*(4*x -1)*(6*x -1)*(8*x -1)*(12*x -1)*(24*x -1)). - _Colin Barker_, Apr 20 2014 %t A034664 Total[#^Range[0, 20]&/@Divisors[24]] (* _Vincenzo Librandi_, Apr 17 2014 *) %o A034664 (Sage) [sigma(24,n)for n in range(0,16)] # _Zerinvary Lajos_, Jun 04 2009 %o A034664 (Magma) [DivisorSigma(n,24): n in [0..20]]; // _Vincenzo Librandi_, Apr 17 2014 %K A034664 nonn,easy %O A034664 0,1 %A A034664 _N. J. A. Sloane_