# A378155 (b-file synthesized from sequence entry)
0 1
1 6
2 48
3 452
4 4680
5 51504
6 591312
7 7002864
8 84926304
9 1049402944
10 13165069824
11 167239042176
12 2146912312064
13 27808372643328
14 362981425115904
15 4769884412086016
16 63050983340533248
17 837805424714425344
18 11184489029495865344
19 149935005483457542144
20 2017560365768892739584