# A054667 (b-file synthesized from sequence entry)
1 1
2 2
3 12
4 51
5 259
6 1284
7 6665
8 34938
9 186624
10 1007510
11 5496925
12 30231792
13 167444795
14 932900050
15 5224277604
16 29386526544
17 165947641615
18 940369782528
19 5345260877285
20 30467985992745
21 174102782860140
22 997134114520250