# A146621 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 5
7 13
8 33
9 131
10 465
11 2505
12 18109
13 137539
14 1253575
15 13645721
16 177302103
17 2859333451
18 55979477433
19 1308550606345
20 36559028261121
21 1227152834528187
22 49674730440765147
23 2427381380225360097