# A030957 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 26
5 134
6 804
7 5632
8 45058
9 405525
10 4055253
11 44607785
12 535293421
13 6958814485
14 97423402796
15 1461351041944
16 23381616671119
17 397487483409030
18 7154774701362549
19 135940719325888433
20 2718814386517768672