Double the lights on each floor.

The second layer is 2X.

The third floor is 4X.

Fourth layer ......

The formula in the list is:

X+2 * X+4 * X+8 * X+ 16 * X+32 * X+64 * X = 38 1

127*X=38 1

X=3

Tower top 64 * X.

Indeed

3*64= 192 lamp