# A149295 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 46
5 149
6 663
7 2381
8 10910
9 41487
10 193621
11 764147
12 3610096
13 14634171
14 69738270
15 288397749
16 1383207836
17 5809925465
18 28003318571
19 119097228729
20 576285049578
21 2476095400119
22 12019187733462
23 52084683932849
24 253483958401586
25 1106444794850311
26 5396592007506327
27 23702894459438651