# A150090 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 19
4 66
5 243
6 930
7 3677
8 14911
9 61634
10 259234
11 1105147
12 4767937
13 20782106
14 91385250
15 405000507
16 1807317447
17 8114777154
18 36636893847
19 166234252180
20 757672572779
21 3467591514145
22 15929670995318
23 73431924702453
24 339581832393760
25 1575001867846787
26 7324903642155787
27 34152593363634683