# A181671 (b-file synthesized from sequence entry)
1 1
2 10
3 72
4 559
5 4459
6 36960
7 316066
8 2760321
9 24491666
10 220098288
11 1998400235
12 18299775876
13 168773875190
14 1566017986235
15 14606736768049
16 136860923837558
17 1287462389890262