# A059863 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 3
5 21
6 189
7 2457
8 36855
9 700245
10 17506125
11 472665375
12 15597957375
13 577124422875
14 22507852492125
15 967837657161375
16 47424045200907375
17 2608322486049905625
18 148674381704844620625
19 9366486047405211099375
20 627554565176149143658125
21 43301264997154290912410625