# A228765 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 11
4 25
5 56
6 126
7 283
8 633
9 1419
10 3178
11 7118
12 15943
13 35710
14 79985
15 179152
16 401270
17 898777
18 2013107
19 4509015
20 10099422
21 22620977
22 50667115
23 113485664
24 254188460
25 569338636
26 1275221080
27 2856276912