# A218382 (b-file synthesized from sequence entry)
1 1
2 3
3 48
4 828
5 8820
6 26100
7 417600
8 2114100
9 3009600
10 43864128
11 200278848
12 1013911668
13 7823392500
14 16222586688
15 259561387008
16 633694792500
17 4152982192128