Quick maths/golf question | Golf Monthly

Heres the deal:
£1 first hole, then £2,then £4,then £8,then £16, £32, £64, £128,£256 for the first nine holes.
The 10th goes up to £512, £1024, £2048, £4096, £8192, £16384, 16th your playing for £32768, £65536 and finally the 18th works out at £131072.