# A348314 (b-file synthesized from sequence entry)
0 0
1 1
2 10
3 78
4 568
5 4120
6 30864
7 244720
8 2088832
9 19389312
10 196514560
11 2173194496
12 26128665600
13 339890756608
14 4759410116608
15 71395178280960
16 1142340032364544
17 19419853564641280
18 349557673401188352
19 6641597100292636672
20 132831947503410872320
21 2789470920661372502016