# A115340 (b-file synthesized from sequence entry)
2 1
3 1
4 2
5 5
6 14
7 50
8 233
9 1248
10 7593
11 49536
12 339483
13 2404472
14 17468202
15 129459090
16 975647292
17 7458907217
18 57744122366
19 452028275567