Calcula las 20 primeras potencias de 2?

2 ^ {1} = 2

2 ^ {2} = 4

2 ^ {3} = 8

2 ^ {4} = 16

2 ^ {5} = 32

2 ^ {6} = 64

2 ^ {7} = 128

2 ^ {8} = 256

2 ^ {9} = 512

2 ^ {10} = 1024

2 ^ {11} = 2048

2 ^ {12} = 4096

2 ^ {13} = 8192

2 ^ {14} = 16384

2 ^ {15} = 32768

2 ^ {16} = 65536

2 ^ {17} = 131072

2 ^ {18} = 262144

2 ^ {19} = 524288

2 ^ {20} = 1048576.