\[
\boxed{
{\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) - \left( n \left( n+1 \right) {\it WeierstrassP} \left( x,{\it g2},{\it g3} \right) +B \right) y \left( x \right) =0}
\]