# A125375 (b-file synthesized from sequence entry)
0 1
1 12
2 102
3 762
4 6442
5 55562
6 486102
7 4278734
8 37774538
9 333954114
10 2954331502
11 26143583918
12 231384164326
13 2048007248286
14 18127716503740
15 160457920059992
16 1420307031097690
17 12572010392961098
18 111282760217915184