\[ \left (x^4+2 x^2+2 x+1\right ) x^2 y^{(3)}(x)-\left (2 x^6+3 x^4-6 x^2-6 x-1\right ) y''(x)+\left (x^6-6 x^3-15 x^2-12 x-2\right ) y'(x)+\left (x^4+4 x^3+8 x^2+6 x+1\right ) y(x)=0 \] ✗ Mathematica : cpu = 300.092 (sec), leaf count = 0 , timed out
$Aborted
✓ Maple : cpu = 0.216 (sec), leaf count = 20
\[ \left \{ y \left ( x \right ) ={\it \_C1}\,{{\rm e}^{x}}+{\it \_C2}\,{{\rm e}^{{x}^{-1}}}+{\it \_C3}\,x{{\rm e}^{x}} \right \} \]