# A251713 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 0
4 0
5 0
6 0
7 1
8 2
9 4
10 7
11 14
12 28
13 56
14 112
15 223
16 444
17 884
18 1761
19 3508
20 6988
21 13920
22 27728
23 55233
24 110022
25 219160
26 436559
27 869610
28 1732232
29 3450544
30 6873360
31 13691487
32 27272952
33 54326744
34 108216929
35 215564248
36 429396264
37 855341984
38 1703810608
39 3393929729