# A120408 (b-file synthesized from sequence entry)
1 2500
2 162000
3 3781575
4 49172480
5 432081216
6 2857680000
7 15219319500
8 68309049600
9 266863130820
10 929327871472
11 2937513954375
12 8547581952000
13 23153892070400
14 58918947333120
15 141893427649968
16 325406324160000
17 714327643354500
18 1507601438758800
19 3070631112865855