LegendreP

See

Legendre Polynomial

Related Wolfram sites

http://functions.wolfram.com/Polynomials/LegendreP/, http://functions.wolfram.com/Polynomials/LegendreP2/, http://functions.wolfram.com/HypergeometricFunctions/LegendrePGeneral/, http://functions.wolfram.com/HypergeometricFunctions/LegendreP2General/, http://functions.wolfram.com/HypergeometricFunctions/LegendreP3General/