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A238938 as a simple table

n a(n)
1 1
2 2
3 4
4 8
5 16
6 32
7 64
8 128
9 256
10 512
11 8192
12 16384
13 32768
14 65536
15 262144
16 524288
17 16777216
18 33554432
19 134217728
20 268435456
21 2147483648
22 4294967296
23 8589934592
24 17179869184
25 34359738368
26 68719476736
27 137438953472
28 549755813888
29 562949953421312
30 2251799813685248
31 147573952589676412928

[1,2,4,8,16,32,64,128,256,512,8192,16384,32768,
 65536,262144,524288,16777216,33554432,134217728,
 268435456,2147483648,4294967296,8589934592,
 17179869184,34359738368,68719476736,137438953472,
 549755813888,562949953421312,2251799813685248,
 147573952589676412928]

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Last modified November 21 22:16 EST 2019. Contains 329383 sequences. (Running on oeis4.)