# A148559 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 18
5 47
6 151
7 460
8 1525
9 5038
10 17053
11 58515
12 203966
13 721558
14 2574957
15 9302325
16 33775642
17 123614239
18 455228563
19 1688097815
20 6293391801
21 23589993847
22 88808957276
23 335602754282
24 1273156370290
25 4847926721793
26 18524640364142
27 71012201291584
28 273027194841206
29 1052433038546206
30 4066858704595868