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 A201106 #26 Jul 15 2021 11:01:22 %S A201106 0,1,14,70,230,595,1316,2604,4740,8085,13090,20306,30394,44135,62440, %T A201106 86360,117096,156009,204630,264670,338030,426811,533324,660100,809900, %U A201106 985725,1190826,1428714,1703170,2018255,2378320,2788016,3252304,3776465,4366110,5027190 %N A201106 a(n) = binomial(n^2,3)/(2*n). %H A201106 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (6,-15,20,-15,6,-1). %F A201106 a(n) = (n-1)*n*(n^3+n^2-2*n-2)/12. %F A201106 G.f.: x^2*(1+8*x+x^2) / (x-1)^6. - _R. J. Mathar_, Nov 28 2011 %p A201106 seq(binomial(n^2,3)/(2*n), n=1..29) %Y A201106 Cf. A264853 (first differences). %K A201106 nonn,easy %O A201106 1,3 %A A201106 _Gary Detlefs_, Nov 26 2011