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 A174654 #16 Apr 15 2024 06:49:02
%S A174654 1,9,59,335,1732,8404,38969,174637,762063,3255119,13662512,56511312,
%T A174654 230859729,933104857,3736739227,14843364031,58540883044,229411923796,
%U A174654 893904838857,3465221557357,13370453635199
%N A174654 Partial sums of A030279.
%H A174654 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (12,-54,115,-132,108,-59,24,-6,1).
%F A174654 a(n) = Sum_{i=1..n} A030279(i).
%F A174654 G.f.: x*(x-1)^2*(x+1)*(x^3-4*x^2+2*x-1) / (x^3-2*x^2+4*x-1)^3. - _Colin Barker_, Apr 21 2013
%t A174654 LinearRecurrence[{12,-54,115,-132,108,-59,24,-6,1},{1,9,59,335,1732,8404,38969,174637,762063},30] (* _Harvey P. Dale_, Nov 07 2022 *)
%Y A174654 Cf. A030279.
%K A174654 nonn,easy
%O A174654 1,2
%A A174654 _Jonathan Vos Post_, Mar 25 2010