(2^2 C0)/1.2 + (2^3.C1)/2.3 + (2^4.C2)/3.4 + . + (2^{n+2}.Cn)/(n+1)(n+2) = (3^(n+2)-2n-5)/(n+1)(n+2)

(2^2. C0)/1.2 + (2^3.C1)/2.3 + (2^4.C2)/3.4 + ... + (2^{n+2}.Cn)/(n+1)(n+2) = (3^(n+2)-2n-5)/(n+1)(n+2)