# A150056 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 18
4 62
5 220
6 816
7 3066
8 11770
9 45840
10 181100
11 722238
12 2904590
13 11764740
14 47972960
15 196737634
16 810804722
17 3355892888
18 13944611892
19 58151327382
20 243285478982
21 1020779890348
22 4294333356808
23 18109979756186
24 76545364440266
25 324206304160480
26 1375801674684476
27 5848739616028206