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 A016817 #23 Apr 21 2023 05:46:21
%S A016817 1,3125,59049,371293,1419857,4084101,9765625,20511149,39135393,
%T A016817 69343957,115856201,184528125,282475249,418195493,601692057,844596301,
%U A016817 1160290625,1564031349,2073071593,2706784157,3486784401,4437053125,5584059449,6956883693,8587340257,10510100501
%N A016817 a(n) = (4n+1)^5.
%H A016817 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (6,-15,20,-15,6,-1).
%F A016817 a(n) = 6*a(n-1) - 15*a(n-2) + 20*a(n-3) - 15*a(n-4) + 6*a(n-5) - a(n-6). - _Wesley Ivan Hurt_, Apr 12 2023
%F A016817 From _Amiram Eldar_, Apr 21 2023: (Start)
%F A016817 a(n) = A016813(n)^5.
%F A016817 Sum_{n>=0} 1/a(n) = 5*Pi^5/3072 + 31*zeta(5)/64. (End)
%t A016817 Table[(4n+1)^5,{n,0,100}] (* _Mohammad K. Azarian_, Jun 18 2016 *)
%t A016817 LinearRecurrence[{6,-15,20,-15,6,-1},{1,3125,59049,371293,1419857,4084101},30] (* _Harvey P. Dale_, Oct 02 2022 *)
%Y A016817 Cf. A013663, A016813.
%K A016817 nonn,easy
%O A016817 0,2
%A A016817 _N. J. A. Sloane_