# A049162 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 33
5 127
6 517
7 2173
8 9379
9 41295
10 184789
11 837903
12 3841603
13 17778605
14 82941987
15 389655675
16 1841797725
17 8752809573
18 41796432863
19 200446855069
20 965032948861
21 4662392162883
22 22597566894457
23 109845197218921