# A337958 (b-file synthesized from sequence entry)
1 1
2 15
3 126
4 700
5 2850
6 9261
7 25480
8 61776
9 135675
10 275275
11 523446
12 943020
13 1623076
14 2686425
15 4298400
16 6677056
17 10104885
18 14942151
19 21641950
20 30767100
21 43008966
22 59208325
23 80378376
24 107730000
25 142699375
26 186978051
27 242545590