# A148670 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 21
5 62
6 201
7 605
8 2011
9 6502
10 22101
11 73668
12 254610
13 855688
14 2992543
15 10303873
16 36346419
17 126557708
18 449930313
19 1574917880
20 5634214960
21 19949390598
22 71696662513
23 255420242076
24 922281690320
25 3296806030186
26 11949223489294
27 42998187306604
28 156311046178142
29 564673749263750
30 2059135123715593