# A016169 (b-file synthesized from sequence entry)
0 0
1 1
2 13
3 127
4 1105
5 9031
6 70993
7 543607
8 4085185
9 30275911
10 222009073
11 1614529687
12 11664504865
13 83828316391
14 599858908753
15 4277376525367
16 30411820662145
17 215703854542471
18 1526853641242033
19 10789535445362647