# A157314 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 16
5 62
6 298
7 1700
8 11448
9 88622
10 778532
11 7636888
12 82782697
13 981775224
14 12643542295
15 175638751080
16 2617558335383
17 41650633309937
18 704712768652527
19 12632584581030449
20 239150363847113653
21 4767657035201958150