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 A365418 #11 Sep 03 2023 13:42:26
%S A365418 1,6,15,29,48,71,99,132,169,211,258,309,365,426,491,561,636,715,799,
%T A365418 888,981,1079,1182,1289,1401,1518,1639,1765,1896,2031,2171,2316,2465,
%U A365418 2619,2778,2941,3109,3282,3459,3641,3828,4019,4215,4416,4621,4831,5046,5265,5489,5718,5951,6189,6432,6679,6931,7188,7449
%N A365418 Partial sums of A301298.
%H A365418 Ray Chandler, <a href="/A365418/b365418.txt">Table of n, a(n) for n = 0..1000</a>
%H A365418 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1,1,-2,1).
%F A365418 G.f.: -(x^4 + 4*x^3 + 4*x^2 + 4x + 1)/((x - 1)^3*(x^2 + x + 1)).
%F A365418 a(n) = 2*a(n-1) - a(n-2) + a(n-3) - 2*a(n-4) + a(n-5) for n > 5.
%t A365418 LinearRecurrence[{2, -1, 1, -2, 1}, {1, 6, 15, 29, 48}, 50]
%Y A365418 Cf. A301298.
%K A365418 nonn,easy
%O A365418 0,2
%A A365418 _Ray Chandler_, Sep 03 2023