# A001901 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 16
4 64
5 128
6 256
7 2048
8 16384
9 32768
10 65536
11 262144
12 1048576
13 2097152
14 4194304
15 67108864
16 1073741824
17 2147483648
18 4294967296
19 17179869184
20 68719476736
21 137438953472
22 274877906944
23 2199023255552