To find the sum of the geometric sequence, we can use the formula:

Sn = (G1 * (1 - r^n)) / (1 - r)

where Sn is the sum of the sequence, G1 is the first term, r is the common ratio, and n is the number of terms.

In this case, G1 = 3 and r = 2. We need to find the sum from the 1st term to the Nth term, so we need to find Sn.

Substituting the values into the formula:

Sn = (3 * (1 - 2^n)) / (1 - 2)

Simplifying:

Sn = (3 * (1 - 2^n)) / (-1)

Sn = -3 * (1 - 2^n)

Therefore, the sum of the geometric sequence from the 1st to the Nth term is -3 * (1 - 2^n).