# A244485 (b-file synthesized from sequence entry)
2 1
3 2
4 4
5 10
6 28
7 70
8 230
9 676
10 2456
11 7916
12 31374
13 109856
14 467716
15 1759422
16 7968204
17 31922840
18 152664200
19 646888154