# A037720 (b-file synthesized from sequence entry)
1 2
2 16
3 129
4 1035
5 8282
6 66256
7 530049
8 4240395
9 33923162
10 271385296
11 2171082369
12 17368658955
13 138949271642
14 1111594173136
15 8892753385089
16 71142027080715
17 569136216645722
18 4553089733165776