# A132386 (b-file synthesized from sequence entry)
1 13
2 180
3 2460
4 10500
5 133560
6 2827440
7 27387360
8 203963760
9 2254412160
10 19260521280
11 233956522800
12 2570029862400
13 33892268810400
14 312098001415200
15 2636529385089600
16 17906040558806400
17 307146357004687200
18 1832625489772677600
19 29247206795963956800
20 387955596028816015200