# A307557 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 9
4 20
5 47
6 110
7 264
8 634
9 1541
10 3754
11 9204
12 22622
13 55817
14 138026
15 342203
16 849984
17 2115245
18 5271970
19 13158944
20 32886338
21 82285031
22 206101422
23 516728937
24 1296664512
25 3256472235
26 8184526438
27 20584627358
28 51805243138
29 130456806425
30 328703655114