# A138211 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 18
5 166
6 2070
7 32505
8 614918
9 13600671
10 344202033
11 9806468970
12 310553772735
13 10820519947581
14 411338412455910
15 16940944600551504
16 751397442828052440
17 35707884976794347170
18 1810006747594245718317