Find the sum `2+5+10 +17+26 + cdots`

Similar Questions

Explore conceptually related problems

Find the sum of n terms of the series : 5+7 +13 +31+85 + cdots .

Find the sum of the first 10 terms of the AP which is (2n-3)/6 .

Find the sum of the series 1.n + 2 .(n-1) + 3.(n-2) + cdots + ( n-1) .2 + n.1.

Find the sum of integers from 1 to 100 that are divisible by 2 or 5

Find the sum of integers from 1 to 100 that are divisible-by 2 or 5 .

Find the sum to n terms of this series. 1times4+3times7+5times10+…….

Find sum of 5 + 55 + 555 + ... to n terms.

Find the sum to n terms of this series. 1^2+3^2+5^2+……….

Find the sum to 20 terms of the AP 10,7,4,……

Find the sum to n terms of a series is 7n^2-5n . Show that it is an AP and find the 15^th term.