# A069022 (b-file synthesized from sequence entry)
1 1
2 8
3 80
4 80
5 1215
6 16767
7 76544
8 636416
9 3995648
10 24151040
11 36315135
12 689278976
13 1487503359
14 1487503359
15 155240824832
16 785129144319
17 4857090670592
18 45922887663615
19 157197025673216
20 1375916505694208
21 2280241934368767