# A150149 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 20
4 74
5 274
6 1103
7 4346
8 18145
9 74331
10 318312
11 1336411
12 5827832
13 24909882
14 110034713
15 476834165
16 2127342959
17 9318014380
18 41903405413
19 185131893648
20 837932888864
21 3728559784111
22 16966589249858
23 75950246723095
24 347176536974470
25 1562080118187658
26 7168193213394010
27 32395087374479255