# A284858 (b-file synthesized from sequence entry)
0 1
1 6
2 54
3 108
4 810
5 2916
6 20412
7 17496
8 590490
9 78732
10 2598156
11 4251528
12 967222620
13 446410440
14 573956280
15 229582512
16 7317942570
17 23245229340
18 1030538500740
19 65086642152