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 A180359 #10 Jul 22 2025 08:24:58 %S A180359 0,10,530,19710,262180,1953170,10077750,40353670,134217800,387420570, %T A180359 1000000090,2357947790,5159780460,10604499490,20661046910,38443359510, %U A180359 68719476880,118587876650,198359290530,322687697950,512000000180 %N A180359 n^9+9n. %H A180359 <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 A180359 a(n)= +10*a(n-1) -45*a(n-2) +120*a(n-3) -210*a(n-4) +252*a(n-5) -210*a(n-6) +120*a(n-7) -45*a(n-8) +10*a(n-9) -a(n-10). G.f.: 10*x*(1+43*x+1486*x^2+8773*x^3+15682*x^4+8773*x^5+1486*x^6+43*x^7+x^8)/(x -1)^10. [From _R. J. Mathar_, Sep 19 2010] %Y A180359 Cf. A132411, A079908, A180354, A180355, A180356, A180357, A180358. %K A180359 easy,nonn %O A180359 0,2 %A A180359 _Odimar Fabeny_, Aug 30 2010 %E A180359 a(0) corrected by _R. J. Mathar_, Sep 19 2010