# A112706 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 9
4 26
5 103
6 542
7 3529
8 26901
9 232416
10 2233500
11 23576045
12 270690473
13 3353312672
14 44520193362
15 629960268107
16 9456454463204
17 149995788999117
18 2505304374275816
19 43928236200319751
20 806397434192280456