# A052408 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 1
5 1
6 3
7 6
8 20
9 48
10 164
11 551
12 2176
13 9985
14 46969
15 253285
16 1388694
17 8053363
18 48266380
19 294130212