# A089154 (b-file synthesized from sequence entry)
1 4
2 30
3 190
4 1176
5 7252
6 44694
7 275422
8 1697232
9 10458820
10 64450158
11 397159774
12 2447408808
13 15081612628
14 92937084582
15 572704120126
16 3529161805344
17 21747674952196
18 134015211518526
19 825838944063358
20 5089048875898680