# A148769 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 21
5 68
6 214
7 677
8 2273
9 7647
10 25918
11 89348
12 311027
13 1088056
14 3829653
15 13588462
16 48394968
17 172944341
18 621204971
19 2238314211
20 8085624821
21 29299373131
22 106444414667
23 387514343973
24 1413668394353
25 5167606834130
26 18922163532610
27 69393623143969
28 254887907279952
29 937530482411295
30 3452720455224744