# A124563 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 22
4 158
5 1455
6 16918
7 244644
8 4361883
9 95746603
10 2592416878
11 86825876398
12 3607980811184
13 186517056299848
14 12022039151786966
15 967930783674722085
16 97490785254375447744
17 12299113367136495834881
18 1945525636812103772634604