\[ 4 x^2 y''(x)-y(x) \left (-4 k x+4 m^2+x^2-1\right )=0 \] ✓ Mathematica : cpu = 0.0129157 (sec), leaf count = 20
\[\{\{y(x)\to c_1 M_{k,m}(x)+c_2 W_{k,m}(x)\}\}\] ✓ Maple : cpu = 0.259 (sec), leaf count = 17
\[ \left \{ y \left ( x \right ) ={\it \_C1}\,{{\sl M}_{k,\,m}\left (x\right )}+{\it \_C2}\,{{\sl W}_{k,\,m}\left (x\right )} \right \} \]