We've calculated wrong anyway. Er, me.

Because I am no calculator.

I did it with the Google Calculator.
1 + 1 = 2
2 + 2 = 4
8 + 8 = 16
16 + 16 = 32
32 + 32 = 64
64 + 64 = 128
128 + 128 = 256
256 + 256 = 512
512 + 512 = 1 024
1 024 + 1 024 = 2 048
2 048 + 2 048 = 4 096
4 096 + 4 096 = 8 192
8 192 + 8 192 = 16 384
16 384 + 16 384 = 32 768
32 768 + 32 768 = 65 536
65 536 + 65 536 = 131 072
131 072 + 131 072 = 262 144
262 144 + 262 144 = 524 288
524 288 + 524 288 = 1 048 576
1 048 576 + 1 048 576 = 2 097 152
2 097 152 + 2 097 152 = 4 194 304
4 194 304 + 4 194 304 = 8 388 608
8 388 608 + 8 388 608 = 16 777 216
16 777 216 + 16 777 216 = 33 554 432
33 554 432 + 33 554 432 = 67 108 864
67 108 864 + 67 108 864 = 134 217 728
134 217 728 + 134 217 728 = 268 435 456
268 435 456 + 268 435 456 = 536 870 912
536 870 912 + 536 870 912 = 1 073 741 824
1 073 741 824 + 1 073 741 824 = 2 147 483 648
2 147 483 648 + 2 147 483 648 = 4 294 967 296
4 294 967 296 + 4 294 967 296 = 8 589 934 592
8 589 934 592 + 8 589 934 592 = 17 179 869 184
17 179 869 184 + 17 179 869 184 = 34 359 738 368
OR only with the results...1
2
4
8
16
32
64
128
256
512
1 024
2 048
4 096
8 192
16 384
32 768
65 536
131 072
262 144
524 288
1 048 576
2 097 152
4 194 304
8 388 608
16 777 216
33 554 432
67 108 864
134 217 728
268 435 456
536 870 912
1 073 741 824
2 147 483 648
4 294 967 296
8 589 934 592
17 179 869 184
34 359 738 368