# A144882 (b-file synthesized from sequence entry)
1 1
2 4
3 16
4 85
5 481
6 3352
7 25420
8 223393
9 2157565
10 23241244
11 272933680
12 3496821133
13 48307202761
14 717473918560
15 11381186498836
16 192155770419673
17 3438337498017781
18 65004294514876996
19 1294456866053992600
20 27081588485949257605