# A149767 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 19
4 75
5 303
6 1297
7 5557
8 24261
9 106399
10 472551
11 2107115
12 9466037
13 42670843
14 193357621
15 878695095
16 4008039183
17 18326746125
18 84037953711
19 386156408739
20 1778381839873
21 8204508712775
22 37920438844591
23 175530699463693
24 813755080675841
25 3777510322216653
26 17558169592824157
27 81705648375517987