# A150760 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 30
4 120
5 504
6 2126
7 9202
8 40108
9 176926
10 785348
11 3510484
12 15771956
13 71179114
14 322554724
15 1466458866
16 6688563260
17 30585834766
18 140219147104
19 644209243192
20 2965723233464
21 13678045731130
22 63189872634240
23 292379024524178
24 1354763058575104
25 6285822696135134
26 29200842639029914
27 135810625365603056