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 A216126 #27 Feb 19 2024 10:25:57 %S A216126 1,5,25,125,625,3125,5625,8125,625,3125,5625,8125,625,3125,5625,8125, %T A216126 625,3125,5625,8125,625,3125,5625,8125,625,3125,5625,8125,625,3125, %U A216126 5625,8125,625,3125,5625,8125,625,3125,5625,8125,625,3125,5625,8125,625,3125,5625 %N A216126 a(n) = 5^n mod 10000. %C A216126 Period = 4. %H A216126 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,1). %F A216126 a(n) = 625*A070370(n) for n>=4. %F A216126 G.f.: (-8000*x^7-5600*x^6-3120*x^5-624*x^4-125*x^3-25*x^2-5*x-1)/(x^4-1). - _Bruno Berselli_, Sep 03 2012 %t A216126 PowerMod[5, Range[0, 100], 10^4] (* _Paolo Xausa_, Feb 19 2024 *) %Y A216126 Cf. A070370. %K A216126 nonn,easy,less %O A216126 0,2 %A A216126 _V. Raman_, Sep 01 2012