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 A035329 #21 Aug 08 2025 11:54:34 %S A035329 0,63,198,429,780,1275,1938,2793,3864,5175,6750,8613,10788,13299, %T A035329 16170,19425,23088,27183,31734,36765,42300,48363,54978,62169,69960, %U A035329 78375,87438,97173,107604,118755,130650,143313,156768,171039,186150,202125,218988,236763 %N A035329 a(n) = n*(2*n+5)*(2*n+7). %D A035329 Eric Harold Neville, Jacobian Elliptic Functions, 2nd ed., p. 38. %H A035329 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-6,4,-1). %F A035329 From _Wesley Ivan Hurt_, Oct 05 2020: (Start) %F A035329 a(n) = 4*n^3 + 24*n^2 + 35*n. %F A035329 a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4). %F A035329 G.f.: 3*x*(21-18*x+5*x^2)/(1-x)^4. (End) %F A035329 From _Elmo R. Oliveira_, Aug 08 2025: (Start) %F A035329 E.g.f.: exp(x)*x*(63 + 36*x + 4*x^2). %F A035329 a(n) = A033537(n)*A020742(n). (End) %t A035329 Table[n*(2*n + 5)*(2*n + 7), {n, 0, 60}] (* _Wesley Ivan Hurt_, Oct 05 2020 *) %o A035329 (Magma) [n*(2*n+5)*(2*n+7) : n in [0..60]]; // _Wesley Ivan Hurt_, Oct 05 2020 %o A035329 (PARI) a(n)=n*(2*n+5)*(2*n+7) \\ _Charles R Greathouse IV_, Oct 18 2022 %Y A035329 Cf. A020742, A033537. %K A035329 nonn,easy %O A035329 0,2 %A A035329 _N. J. A. Sloane_ %E A035329 More terms from _Sean A. Irvine_, Oct 05 2020