# A251393 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 6
5 14
6 29
7 65
8 137
9 277
10 546
11 1109
12 2208
13 4391
14 8746
15 17404
16 34662
17 69036
18 137604
19 274385
20 547278
21 1091962
22 2179171