# A025255 (b-file synthesized from sequence entry)
1 1
2 3
3 1
4 1
5 4
6 8
7 22
8 55
9 145
10 386
11 1039
12 2837
13 7808
14 21693
15 60697
16 170959
17 484306
18 1379020
19 3944780
20 11330962
21 32668988
22 94510169
23 274262571
24 798153211
25 2328830794
26 6811354123
27 19966156857
28 58647721275
29 172600025350
30 508870577560
31 1502795261440