# A171887 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 9
5 20
6 50
7 147
8 269
9 992
10 1000
11 4297
12 76468
13 97314
14 445519
15 1315337
16 2594742
17 3888902
18 91859035
19 92411466
20 1180624310
21 4501485474
22 11288114818
23 23434425843