# A289709 (b-file synthesized from sequence entry)
1 2
2 4
3 10
4 28
5 84
6 272
7 946
8 3486
9 13560
10 55432
11 236852
12 1054928
13 4881972
14 23420436
15 116204016
16 595246848
17 3142169416
18 17068245184
19 95267426432
20 545732236936
21 3204607199704