# A056841 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 5
5 15
6 54
7 212
8 908
9 4011
10 18260
11 84320
12 394462
13 1860872
14 8843896
15 42275308
16 203113670
17 980101070
18 4747504560
19 23074132601