# A036070 (b-file synthesized from sequence entry)
0 1
1 10
2 80
3 560
4 3584
5 21504
6 122880
7 675840
8 3604480
9 18743296
10 95420416
11 477102080
12 2348810240
13 11408506880
14 54760833024
15 260113956864
16 1224065679360
17 5712306503680
18 26456998543360
19 121702193299456