# A037678 (b-file synthesized from sequence entry)
1 1
2 8
3 66
4 531
5 4249
6 33992
7 271938
8 2175507
9 17404057
10 139232456
11 1113859650
12 8910877203
13 71287017625
14 570296141000
15 4562369128002
16 36498953024019
17 291991624192153
18 2335932993537224
19 18687463948297794
20 149499711586382355
21 1195997692691058841