# A148853 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 28
5 91
6 352
7 1306
8 5182
9 20797
10 85424
11 355119
12 1504967
13 6418859
14 27758070
15 120917363
16 531015804
17 2349303542
18 10455790760
19 46802437636
20 210614263933
21 951984893677
22 4322352594813
23 19700431190212
24 90116118871500
25 413622990248458
26 1904276004073268
27 8792668328752535
28 40707759528449518