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 A059601 #7 Jul 09 2025 03:55:59 %S A059601 1,20,160,820,3190,10252,28600,71500,163735,348920,700128,1334840, %T A059601 2435420,4276520,7261040,11966504,19203965,30091820,46147200,69397900, %U A059601 102518130,148991700,213306600,301185300 %N A059601 Expansion of (1+10*x+5*x^2)/(1-x)^10. %C A059601 a(n)= A038165(2*n). %H A059601 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (10, -45, 120, -210, 252, -210, 120, -45, 10, -1). %F A059601 a(n)= binomial(n+7, 7)*(4*n^2+23*n+18)/18. %F A059601 G.f.:(1+10*x+5*x^2)/(1-x)^10. %K A059601 nonn,easy %O A059601 0,2 %A A059601 _Wolfdieter Lang_, Feb 02 2001