# A162814 (b-file synthesized from sequence entry)
0 5
1 18
2 78
3 360
4 1692
5 7992
6 37800
7 178848
8 846288
9 4004640
10 18950112
11 89672832
12 424336320
13 2007980928
14 9501867648
15 44963320320
16 212768716032
17 1006832374272
18 4764381949440
19 22545297451008
20 106685493009408
21 504841173350400