# A333473 (b-file synthesized from sequence entry)
0 1
1 2
2 12
3 92
4 752
5 6352
6 54768
7 478928
8 4231424
9 37680320
10 337622912
11 3040354176
12 27492359936
13 249463806464
14 2270319909632
15 20714443816192
16 189418898063360
17 1735482632719360
18 15928224355854336
19 146414296847992832
20 1347721096376573952
21 12421053168197722112