# A149697 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 69
5 265
6 1153
7 4801
8 21203
9 91055
10 408161
11 1795037
12 8126131
13 36277181
14 165401729
15 746407191
16 3422278411
17 15570552767
18 71713302271
19 328341604021
20 1517767537579
21 6983968845017
22 32382943834625
23 149619923979041
24 695566730093951
25 3224633528854023
26 15024750966474325
27 69853040121425677