Find the sum `1+(1+2)+(1+2+2^(2))+(1+2+2^(2)+2^(3))+` …. To n terms.

The sum of the serieslebrge (1+2)+(1+2+2^(2))+(1+2+2^(2)+2^(3))+.. to n term is

Find the sum to n terms series 1^(2) + (1^(2) + 2^(2)) (1^(2) + 2^(2) + 3^(2)) + . . . . .

Find the sum: 1 + (1)/(2) (1 + 2) + (1)/(3) (1 + 2 + 3) + ……up to 16 terms.

Find the sum to n terms : (1)/(2) + (3)/(2^(2)) + (5)/(2^(3)) +…+ (2n-1)/(2^(n))

Find the sum 1+2.2+3.2^(2)+4.2^(3)+....+n.2^(n-1)

Find 1^2/1 + (1^2 + 2^2) / 2 + (1^2 + 2^2 + 3^2) / 3 + …..upto n terms.

Find the sum of 1^1 n + 2^2 (n - 1) + 3^2 (n - 2) + 4^2 (n -3) ……upto 'n' terms.

Find the sum to n terms of each of the following series : (1^(2)) + (1^(2)+2^(2)) + (1^(2) + 2^(2) + 3^(2)) +…