Question

Express in summation notation: 5^1+7^2+9^3+11^4+13^5+15^6+17^7

Answer 1

5+49+729+1331+371293+11390625+410338673

Answer 2

That's not summation notation. Thank you for giving it a shot though!

Answer 3

\[\sum _{n=1}^7 (3+2 n)^n=422116015 \]From Mathematica:

Table[ (3+2 n)^n, {n,7} ] = {5, 49, 729, 14641, 371293, 11390625, 410338673}

Plus[ 5, 49, 729, 14641, 371293, 11390625, 410338673 ]= 422116015

Answer 4

Thank you!