# A063809 (b-file synthesized from sequence entry)
0 1
1 108
2 2160
3 40176
4 743040
5 13735872
6 253912320
7 4693641984
8 86763294720
9 1603843918848
10 29647506124800
11 548042492768256
12 10130719683870720
13 187269203879903232
14 3461723926449684480
15 63990940820356399104
16 1182890546466536816640