Given the N-1 degree of sequence an = 2n + 1 bn = 8. CN = an * BN. Find the first n terms of CN and TN

Given the N-1 degree of sequence an = 2n + 1 bn = 8. CN = an * BN. Find the first n terms of CN and TN

cn=(2n+1)*8^(n-1)
Sum of dislocation subtraction