# A247662 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 12
5 21
6 37
7 60
8 99
9 156
10 244
11 371
12 561
13 829
14 1218
15 1763
16 2532
17 3594
18 5068
19 7075
20 9819