# A137549 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 14
5 43
6 143
7 511
8 1950
9 7903
10 33848
11 152529
12 720466
13 3555715
14 18285538
15 97752779
16 542107657
17 3112916651
18 18477588573
19 113203102619
20 714836382820
21 4646688247467
22 31057662848411
23 213217403924667
24 1502038027665181