# A236111 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 15
5 30
6 210
7 462
8 1848
9 2310
10 9240
11 18480
12 55440
13 83160
14 166320
15 498960
16 2494800
17 17463600
18 331808400
19 4418290800