# A120594 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 44
4 394
5 3948
6 42364
7 476120
8 5532714
9 65935804
10 801461012
11 9897836520
12 123840983812
13 1566487308344
14 19999112293944
15 257365488659376
16 3334967582746218
17 43477505482249692
18 569854228738577572