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 A244632 #28 Dec 01 2024 13:41:26
%S A244632 0,23,92,207,368,575,828,1127,1472,1863,2300,2783,3312,3887,4508,5175,
%T A244632 5888,6647,7452,8303,9200,10143,11132,12167,13248,14375,15548,16767,
%U A244632 18032,19343,20700,22103,23552,25047,26588,28175,29808,31487,33212,34983,36800,38663
%N A244632 a(n) = 23*n^2.
%C A244632 First bisection of A195058. - _Bruno Berselli_, Jul 03 2014
%H A244632 Vincenzo Librandi, <a href="/A244632/b244632.txt">Table of n, a(n) for n = 0..1000</a>
%H A244632 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1).
%F A244632 G.f.: 23*x*(1 + x)/(1 - x)^3. [corrected by _Bruno Berselli_, Jul 03 2014]
%F A244632 a(n) = 3*a(n-1) - 3*a(n-2) + a(n-3) for n > 2.
%F A244632 a(n) = 23*A000290(n). - _Omar E. Pol_, Jul 03 2014
%F A244632 From _Elmo R. Oliveira_, Dec 01 2024: (Start)
%F A244632 E.g.f.: 23*x*(1 + x)*exp(x).
%F A244632 a(n) = n*A008605(n) = A195058(2*n). (End)
%t A244632 Table[23 n^2, {n, 0, 40}]
%t A244632 LinearRecurrence[{3,-3,1},{0,23,92},50] (* _Harvey P. Dale_, Jul 14 2024 *)
%o A244632 (Magma) [23*n^2: n in [0..40]];
%o A244632 (PARI) a(n)=23*n^2 \\ _Charles R Greathouse IV_, Jun 17 2017
%Y A244632 Cf. A000290, A008605, A195058.
%Y A244632 Cf. similar sequences listed in A244630.
%K A244632 nonn,easy
%O A244632 0,2
%A A244632 _Vincenzo Librandi_, Jul 03 2014