# A008909 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 8
5 21
6 56
7 153
8 428
9 1222
10 3549
11 10454
12 31159
13 93801
14 284788
15 871007
16 2681018
17 8298932
18 25817395
19 80674901
20 253106836
21 796968055
22 2517706036
23 7977573202
24 25347126629
25 80738862084
26 257778971503
27 824798533932
28 2644335308021
29 8493626448823