login
Row sums of triangle A115237.
2

%I #7 Feb 07 2016 21:33:31

%S 1,3,9,19,38,65,108,165,247,350,489,658,876,1134,1456,1830,2285,2805,

%T 3425,4125,4946,5863,6924,8099,9443,10920,12593,14420,16472,18700,

%U 21184,23868,26841,30039,33561,37335,41470,45885,50700,55825,61391

%N Row sums of triangle A115237.

%H G. C. Greubel, <a href="/A115238/b115238.txt">Table of n, a(n) for n = 0..10000</a>

%F G.f.: (1+x+2*x^2+2*x^3+x^4)/((1-x)^2*(1-x^2)^2*(1-x^4)). - corrected by _G. C. Greubel_, Feb 06 2016

%t f := Series[(1 + x + 2*x^2 + 2*x^3 + x^4)/((1 - x)^2*(1 - x^2)^2*(1 - x^4)), {x, 0, 100}]; CoefficientList[f, x] (* _G. C. Greubel_, Feb 06 2016 *)

%K nonn,easy

%O 0,2

%A _Christian G. Bower_, Jan 17 2006