# A150122 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 20
4 68
5 250
6 924
7 3528
8 13668
9 53584
10 213074
11 852976
12 3447882
13 14021322
14 57368826
15 236006796
16 975087356
17 4046503078
18 16851624666
19 70419777860
20 295160069720
21 1240535072130
22 5227287139952
23 22076820929638
24 93441027387480
25 396272206161792
26 1683637050747310
27 7165509645578814