# A148811 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 26
5 86
6 309
7 1108
8 4177
9 16043
10 62131
11 245624
12 988058
13 3974672
14 16249872
15 67146327
16 277391652
17 1159193515
18 4883667639
19 20554100144
20 87291612458
21 373042330747
22 1592243882405
23 6845720258023
24 29580989452406
25 127649661170533
26 554181473820419
27 2415949131968238
28 10517688992163295