\[ 4 x^2 y''(x)-y(x) \left (-4 k x+4 m^2+x^2-1\right )=0 \] ✓ Mathematica : cpu = 0.0170365 (sec), leaf count = 20
\[\left \{\left \{y(x)\to c_1 M_{k,m}(x)+c_2 W_{k,m}(x)\right \}\right \}\] ✓ Maple : cpu = 0.088 (sec), leaf count = 17
\[ \left \{ y \left ( x \right ) ={\it \_C1}\,{{\sl M}_{k,\,m}\left (x\right )}+{\it \_C2}\,{{\sl W}_{k,\,m}\left (x\right )} \right \} \]