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 A088038 #11 Dec 05 2013 19:56:32 %S A088038 8,64,729,4913,35937,274625,2146689,16974593,135005697,1076890625, %T A088038 8602523649,68769820673,549957165057,4398851866625,35187593412609, %U A088038 281487861809153,2251851353686017,18014604668698625,144116012711149569 %N A088038 Smallest cube k == 1 (mod some n-th power), k > 1. %C A088038 In most of the cases the n-th power that divides a(n)-1 is 2^n. %F A088038 Empirical G.f.: -x*(3904*x^5-6104*x^4+2502*x^3-329*x^2+56*x-8) / ((x-1)*(2*x-1)*(4*x-1)*(8*x-1)). [_Colin Barker_, Feb 05 2013] %e A088038 a(4) = 4913 = 17^3 and 4912 = (2^4)*307. %Y A088038 Cf. A088039. %K A088038 nonn %O A088038 1,1 %A A088038 _Amarnath Murthy_, Sep 19 2003 %E A088038 More terms from _Ray Chandler_, Oct 04 2003