# A337797 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 13
5 45
6 198
7 858
8 3728
9 16115
10 69125
11 292940
12 1224628
13 5052396
14 20570806
15 82655098
16 327881398
17 1284663878
18 4973614490
19 19034194696
20 72037124003
21 269723590850
22 999517370314
23 3667158097572
24 13325691939021
25 47975192145998