# A108305 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 15
5 52
6 203
7 877
8 4139
9 21119
10 115495
11 671969
12 4132936
13 26723063
14 180775027
15 1274056792
16 9320514343
17 70548979894
18 550945607475
19 4427978077331
20 36544023687590