# A366216 (b-file synthesized from sequence entry)
0 1
1 1
2 8
3 60
4 520
5 4886
6 48384
7 497460
8 5259872
9 56834345
10 624819148
11 6966612604
12 78592083420
13 895432704860
14 10288759392156
15 119089472755860
16 1387274092156508
17 16251727492295812
18 191342076640423136
19 2262894045516407118
20 26869820052175649836