# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a143611 Showing 1-1 of 1 %I A143611 #6 Apr 06 2018 11:52:54 %S A143611 1,1,2,3,4,6,8,11,14,18,23,29,36,45,55,67,82,99,120,144,173,207,247, %T A143611 295,351,417,495,587,695,823,973,1150,1358,1603,1892,2231,2631,3101, %U A143611 3654,4305,5071,5972,7032,8279,9746,11472,13502,15891,18700,22005,25893 %N A143611 Expansion of x/((1-x)^2(1+x-x^3-x^4-x^5-x^6-x^7+x^9+x^10)). %F A143611 G.f.: x/((1-x)^2(1+x-x^3-x^4-x^5-x^6-x^7+x^9+x^10)). [_R. J. Mathar_, Nov 01 2008] %t A143611 f[x_] = 1 - x - x^2 + x^4 + x^8 - x^10 - x^11 + x^12; %t A143611 g[x] = ExpandAll[x^12*f[1/x]]; %t A143611 Table[SeriesCoefficient[Series[1/g[x], {x, 0, 50}], n], {n, 0, 50}]; %K A143611 nonn,easy,less %O A143611 1,3 %A A143611 _Roger L. Bagula_ and _Gary W. Adamson_, Oct 26 2008 %E A143611 Better name (using g.f.) from _Joerg Arndt_, Apr 06 2018 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE