# A122471 (b-file synthesized from sequence entry)
0 1
1 6
2 40
3 277
4 1935
5 13540
6 94774
7 663411
8 4643869
9 32507074
10 227549508
11 1592846545
12 11149925803
13 78049480608
14 546346364242
15 3824424549679
16 26770971847737
17 187396802934142
18 1311777620538976
19 9182443343772813