# A216585 (b-file synthesized from sequence entry)
0 1
1 2
2 11
3 66
4 485
5 3842
6 32712
7 291568
8 2697610
9 25679316
10 250190125
11 2484270622
12 25062816127
13 256275246582
14 2650947762450
15 27697861115740
16 291943603838698
17 3101066786857876
18 33167191013319532
19 356924515784037128
20 3862299973917286526
21 42003704374124712172