# A149432 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 45
5 174
6 710
7 2829
8 11685
9 49826
10 212370
11 908756
12 3967406
13 17428452
14 76575883
15 339309966
16 1515297265
17 6775762236
18 30392803463
19 137107357008
20 620274107946
21 2810115185408
22 12773447145043
23 58242082395214
24 265937635904625
25 1216485786889994
26 5578551230005231
27 25624367940626478