# A047103 (b-file synthesized from sequence entry)
1 1
2 1
3 5
4 16
5 58
6 220
7 821
8 3090
9 11743
10 44792
11 171495
12 659051
13 2540116
14 9814642
15 38007320
16 147472450
17 573200298
18 2231386904
19 8698569320
20 33952074197
21 132672190652
22 518973027214
23 2031995088017
24 7963057824045
25 31231061046115