Find the first, fourth, and eighth terms of the sequence. A (n) = - 5*2^n-1

If you would like to know the first, the fourth and the eighth term of the sequence, you can calculate this using the following steps:

A (n) = - 5 * 2^n - 1

A (1) = - 5 * 2^1 - 1 = - 5 * 2 - 1 = - 10 - 1 = - 11

A (4) = - 5 * 2^4 - 1 = - 5 * 16 - 1 = - 80 - 1 = - 81

A (8) = - 5 * 2^8 - 1 = - 5 * 256 - 1 = - 1280 - 1 = - 1281