Question Number 27498 by abdo imad last updated on 07/Jan/18
$${find}\:\:{S}_{{n}} \:=\:\:\left({C}_{{n}} ^{\mathrm{0}} \:\right)^{\mathrm{3}} \:\:+\left(\:{C}_{{n}} ^{\mathrm{1}} \right)^{\mathrm{3}} +….\left({C}_{{n}} ^{{n}} \right)^{\mathrm{3}} \:\:. \\ $$