# A038723 (b-file synthesized from sequence entry)
0 1
1 4
2 23
3 134
4 781
5 4552
6 26531
7 154634
8 901273
9 5253004
10 30616751
11 178447502
12 1040068261
13 6061962064
14 35331704123
15 205928262674
16 1200237871921
17 6995498968852
18 40772755941191
19 237641036678294
20 1385073464128573