# A049152 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 11
4 43
5 183
6 815
7 3751
8 17713
9 85317
10 417539
11 2070355
12 10378707
13 52513683
14 267833407
15 1375511991
16 7107227481
17 36920353577
18 192710512163
19 1010189811763
20 5315874933075
21 28071323867887
22 148706825853775