# A075031 (b-file synthesized from sequence entry)
1 1
2 2
3 20
4 20
5 714
6 714
7 25550
8 90180
9 142803
10 809300
11 27195648
12 27195648
13 6973441007
14 37962822225
15 37962822225
16 114296059262
17 265228019405583
18 394047434860662
19 2493689139940250