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 A017028 #19 Sep 08 2022 08:44:41 %S A017028 531441,1000000000000,582622237229761,36520347436056576, %T A017028 787662783788549761,9065737908494995456,68952523554931640625, %U A017028 390877006486250192896,1779197418239532716881,6831675453247426400256 %N A017028 a(n) = (7*n + 3)^12. %H A017028 Vincenzo Librandi, <a href="/A017028/b017028.txt">Table of n, a(n) for n = 0..10000</a> %H A017028 <a href="/index/Rec#order_13">Index entries for linear recurrences with constant coefficients</a>, signature (13, -78, 286, -715, 1287, -1716, 1716, -1287, 715, -286, 78, -13, 1). %F A017028 G.f.: -(531441 + 999993091267*x + 569622278682159*x^2 + 29024258200077557*x^3 + 358056802003715946*x^4 + 1508793858724585278*x^5 + 2506096413822632190*x^6 + 1714130567777075370*x^7 + 467396391757977813*x^8 + 44810629431950799*x^9 + 1116033121151651*x^10 + 3138210272913*x^11 + 16777216*x^12)/(x-1)^13. - _R. J. Mathar_, Jul 07 2017 %t A017028 (7Range[0,10]+3)^12 (* _Harvey P. Dale_, Nov 03 2011 *) %o A017028 (Magma) [(7*n+3)^12: n in [0..20]]; // _Vincenzo Librandi_, Jul 14 2011 %K A017028 nonn,easy %O A017028 0,1 %A A017028 _N. J. A. Sloane_