# A148816 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 26
5 89
6 317
7 1129
8 4333
9 16375
10 64689
11 255510
12 1031520
13 4176411
14 17235081
15 71002938
16 297843534
17 1246468199
18 5289497067
19 22427668932
20 96117562882
21 411666657671
22 1779870206015
23 7686833020463
24 33480379281149
25 145660650014735
26 638356364542079
27 2795072779720188
28 12315985271310940