# A148906 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 32
5 105
6 429
7 1563
8 6673
9 25959
10 112651
11 457235
12 2015671
13 8422815
14 37516109
15 160145249
16 719358925
17 3120482258
18 14110389142
19 61984334190
20 281826273716
21 1250535422363
22 5711981682731
23 25554828817066
24 117181130626924
25 527847897054903
26 2428588448829353
27 11002765062169712
28 50771524681148388