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 A022287 #23 Aug 24 2017 16:34:56
%S A022287 0,15,59,132,234,365,525,714,932,1179,1455,1760,2094,2457,2849,3270,
%T A022287 3720,4199,4707,5244,5810,6405,7029,7682,8364,9075,9815,10584,11382,
%U A022287 12209,13065,13950,14864,15807,16779
%N A022287 a(n) = n*(29*n + 1)/2.
%H A022287 G. C. Greubel, <a href="/A022287/b022287.txt">Table of n, a(n) for n = 0..5000</a>
%H A022287 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1).
%F A022287 a(n) = 29*n + a(n-1) - 14 for n>0, a(0)=0. - _Vincenzo Librandi_, Aug 04 2010
%F A022287 G.f.: x*(15 + 14*x)/(1 - x)^3 . - _R. J. Mathar_, Aug 04 2016
%F A022287 a(n) = A000217(15*n) - A000217(14*n). - _Bruno Berselli_, Oct 13 2016
%F A022287 E.g.f.: (x/2)*(29*x + 30)*exp(x). - _G. C. Greubel_, Aug 24 2017
%t A022287 Table[n (29 n + 1)/2, {n, 0, 40}] (* _Bruno Berselli_, Oct 13 2016 *)
%o A022287 (PARI) a(n)=n*(29*n+1)/2 \\ _Charles R Greathouse IV_, Jun 17 2017
%Y A022287 Cf. similar sequences listed in A022289.
%K A022287 nonn,easy
%O A022287 0,2
%A A022287 _N. J. A. Sloane_