# A129532 (b-file synthesized from sequence entry)
0 0
1 0
2 6
3 72
4 576
5 3840
6 23040
7 129024
8 688128
9 3538944
10 17694720
11 86507520
12 415236096
13 1962934272
14 9160359936
15 42278584320
16 193273528320
17 876173328384
18 3942779977728
19 17626545782784
20 78340203479040
21 346346162749440