# A191809 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 32
5 174
6 1071
7 7281
8 53943
9 432555
10 3743146
11 34934853
12 351853883
13 3827477399
14 44985837602
15 570985992828
16 7814212692498
17 115024461077654
18 1815588345261996
19 30628743324667923
20 550414603283527315
21 10503650627005928698