# A125322 (b-file synthesized from sequence entry)
0 1
1 12
2 72
3 360
4 2080
5 12232
6 73656
7 449440
8 2770016
9 17195112
10 107304872
11 672224048
12 4223186080
13 26586825472
14 167628931360
15 1058056409920
16 6683674433920
17 42244783230496
18 267124015799712
19 1689602502335776