# A119920 (b-file synthesized from sequence entry)
1 1
2 4
3 24
4 96
5 480
6 1728
7 8064
8 30720
9 129024
10 506880
11 2095104
12 8232960
13 33546240
14 133152768
15 536248320
16 2139095040
17 8589803520
18 34285289472
19 137438429184
20 549212651520
21 2198882746368
22 8791793860608
23 35184363700224