Powers of 2 sequence

In this sequence every element is a a power of 2.

1st 2
2nd 4
3rd 8
4th 16
5th 32
6th 64
7th 128
8th 256
9th 512
10th 1024
11th 2048
12th 4096
13th 8192
14th 16384
15th 32768
16th 65536
17th 131072
18th 262144
19th 524288
20th 1048576
21st 2097152
22nd 4194304
23rd 8388608
24th 16777216
25th 33554432
26th 67108864
27th 134217728
28th 268435456
29th 536870912
30th 1073741824
31st 2147483648
32nd 4294967296
33rd 8589934592
34th 17179869184
35th 34359738368
36th 68719476736
37th 137438953472
38th 274877906944
39th 549755813888
40th 1099511627776
41st 2199023255552
42nd 4398046511104
43rd 8796093022208
44th 17592186044416
45th 35184372088832
46th 70368744177664
47th 140737488355328
48th 281474976710656
49th 562949953421312
50th 1125899906842624
51st 2251799813685248
52nd 4503599627370496
53rd 9007199254740992
54th 18014398509481984
55th 36028797018963968
56th 72057594037927936
57th 144115188075855872
58th 288230376151711744
59th 576460752303423488
60th 1152921504606846976
61st 2305843009213693952
62nd 4611686018427387904
63rd 9.2233720368548E+18
64th
1.844674407371E+19