# A081691 (b-file synthesized from sequence entry)
0 0
1 2
2 6
3 11
4 20
5 38
6 71
7 136
8 265
9 523
10 1036
11 2061
12 4110
13 8207
14 16400
15 32785
16 65554
17 131092
18 262165
19 524310
20 1048599
21 2097176
22 4194329
23 8388634
24 16777243
25 33554460
26 67108893
27 134217758
28 268435487
29 536870944
30 1073741857
31 2147483682