# A037523 (b-file synthesized from sequence entry)
1 2
2 13
3 78
4 470
5 2821
6 16926
7 101558
8 609349
9 3656094
10 21936566
11 131619397
12 789716382
13 4738298294
14 28429789765
15 170578738590
16 1023472431542
17 6140834589253
18 36845007535518
19 221070045213110
20 1326420271278661