# A054666 (b-file synthesized from sequence entry)
1 1
2 3
3 12
4 54
5 259
6 1296
7 6665
8 34992
9 186624
10 1007769
11 5496925
12 30233088
13 167444795
14 932906715
15 5224277604
16 29386561536
17 165947641615
18 940369969152
19 5345260877285
20 30467987000514
21 174102782860140
22 997134120017175