# A320957 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 10
4 70
5 656
6 7442
7 99280
8 1515190
9 26038016
10 497227682
11 10445708800
12 239394707110
13 5943715352576
14 158922998335922
15 4552807055288320
16 139123511874743830
17 4517007538261262336
18 155283277843358756162
19 5634815061983539363840
20 215234080472925069593350