# A033191 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 14
5 42
6 132
7 429
8 1430
9 4861
10 16778
11 58598
12 206516
13 732825
14 2613834
15 9358677
16 33602822
17 120902914
18 435668420
19 1571649221
20 5674201118
21 20497829133
22 74079051906
23 267803779710
24 968355724724
25 3502058316337
26 12666676646162
27 45818284122149